If you do not distinguish between what is an effective support level and an invalid support level, it is easy to copy the bottom to the middle of the mountain or be deeply trapped.
Today, let's talk about how to see whether the support level of the stock price is valid.
First, let's look at the first type of effective support level $NVIDIA (NVDA.US)$ 
In the upward trend of the pullback, the yin line that appears in the K-line...

How to judge whether a stock can be bought in the short term? To share a little trick with you, just pay attention to the first 30 minutes of stock trading, you can judge whether the stock can buy in the end, I summarized 6 forms to share with you.
1, within 30 minutes before the transaction, if the stock price does not have a relatively large fluctuation, the trend of the whole day will not have a good performance
2, the first 30 minutes of the transaction, the stock price fell first and then rose, and the increase exceeded the opening price, which means that the stock is relatively strong today and will continue to rise,
3, 30 minutes before the transaction, the stock price fell first and then rose, but did not exceed the opening price, which means that the stock is relatively weak and must not be bought.
4, 30 minutes before the transaction, the stock price first rose and then fell, and fell below the opening price, indicating that this stock is also relatively weak and cannot be bought.
5, 30 minutes before the transaction, the stock price rose first and then fell, but did not fall below the opening price, which shows that the bookmaker is scary, and there will be a high probability of pulling up next
6, 30 minutes before the transaction, the stock price first rose and then fell and then rose again, indicating that the long and short funds are in the game, the stock price will usually oscillate upwards, you can choose to buy at the low point.
If you are new to trading you can see more, next I will share more trading tips  $TENCENT (00700.HK)$  $AMC Entertainment (AMC.US)$  $Futu Holdings Ltd (FUTU.US)$  $JD-SW (09618.HK)$  $Alibaba (BABA.US)$  $Starbucks (SBUX.US)$  $NVIDIA (NVDA.US)$  $Amdocs (DOX.US)$  $XIAOMI-W (01810.HK)$

Today, green electricity has become the main force in the market, in fact, the root is the energy revolution, Lao Li also said before, in the context of carbon neutrality, the market of green electricity can run through to next year, and for green electricity, I often share its investment logic with you. Interested friends can go to my homepage to see these articles.
Today reminds you once again that electricity will continue to soar and be tracked sustainably.
In fact, in the secondary market to do investment, the study is a direction, do the right direction, even if a moment of chasing high caused losses do not have to worry, the general trend will push you forward. Do the right direction, the waves of gold panning for drama.
$Hang Seng Index (800000.HK)$ Hang Seng Index today can maintain water shocks, Tencent is really out of the strong, if today Tencent in the performance of a little weaker, it is estimated that the market has the possibility of breaking a new low, from the current market environment, the decline has not completely ended, need to pay attention to the weight and mood whether there is a possibility of resonance, the technical level of the daily level in the lower edge of the channel to obtain support, here if stabilized, then start to attack the downward channel axis, support can see the previous new low near 22700, The upper pressure of 23500 will open up new upside if it can break through.
Individual stocks
$TENCENT (00700.HK)$ Tencent in the morning strong attack, driving the stock price back to above 460 again, although the stock price is back above 460, it should be noted that it is still the left side of the box shock, so if there is a rebound tomorrow can be appropriately low suction, do not chase up, the upper pressure 500 waiting for a breakthrough.
$BYD COMPANY (01211.HK)$  BYD today's performance is a bit crotch, the peripheral new energy sector rebounded sharply, Tesla stock prices have returned to the 1000 mark, today BYD only rose so much, the strength is obviously unable to keep up,  $Tesla (TSLA.US)$ 
Short-term BYD situation is the valuation of the high short-term bearish, just to see the market here is the way to use the shock downward, or directly with the decline in time, the current waiting for the end of the adjustment is the mainstay, the following support 240 does not fall below the market will be adjusted in a box shock way.
$XIAOMI-W (01810.HK)$ millet now the trend is the more to see the more comfortable, the high point is getting higher and higher day by day, the technical indicators macd has also begun to turn red, the only drawback is that the amount of energy is a little less, the amount of energy I think the main or the market as a whole is relatively weak, the capital wait-and-see mood is relatively strong, if the millet out of a decent Yang line, the funds will be crazy to grab the chip. Tomorrow if there is a chance, I will open a position in Xiaomi, if there is no chance tomorrow, at the latest after Christmas.
$WUXI BIO (02269.HK)$ Yesterday's opening of the position of WuXi Biology, today's amplitude is significantly reduced, a little to the node of the change, the macd yin line is also shrinking, the probability of the next upward change will be greater, waiting for the trend to first repair the yin line caused by the bearish mainly.
$JD-SW (09618.HK)$

$Hang Seng Index (800000.HK)$ Hang Seng Index slight shock, originally a good trend was beaten down by Ali's sudden bearishness, the current market is more emotional, if there is a recovery of emotions, the market will have a large rebound repair expectations. Technically, the daily level of the Hang Seng Index is still in the downtrend, but if the previous low is not broken, don't worry, the lower support 23000 does not break the low suction mainly.
Individual stocks:
$TENCENT (00700.HK)$ Tencent rebounded today after falling back again, the short-term is only resonant with the index, the fundamentals have not changed before you can rest assured that the low suction, but the mood of the Internet manufacturers need some time to repair, tencent is still on the left side of the transaction, or mainly based on low suction, waiting for a breakthrough above 500 to open a new upward space
$XIAOMI-W (01810.HK)$  millet this position can basically confirm the stop fall, yesterday after the amount of anti-package after today there is a low doji, now there is a lack of a start signal, if there can be a yang line to drive emotions, millet has the potential to become the leader of this Hang Seng rebound. If the rally stands at 19 yuan, this wave of rebound can be seen near 23 yuan (waiting for Xiaomi's opening signal)
$BYD COMPANY (01211.HK)$ BYD rebounded again today, but the downward trend of BYD has been confirmed, so here can be seen as a reversal of the downward correction of the downward slope, but the valuation repair of the new energy sector is still in progress, the short-term rebound is not suitable for participation, and the daily level below the support of 240 will accelerate the downward trend.
$CITIC SEC (06030.HK)$ CITIC Securities, because the overall sector of securities companies rushed up and down, did not form the overall effect of the brokerage sector, but the AH linkage is obvious, and there is a possibility of repairing the decline after the allotment, and the possibility of turning stronger is very large, if the pivot support 19.5 is a good opportunity to get on the train.
$WUXI BIO (02269.HK)$ today opened a position in WuXi Biologics, in fact, for WuXi from the day of the big fall I began to consider, the core view at that time is that there are great trading opportunities, but must have patience, the reason why I chose today, is to wait for the second wave of entanglement, after the first wave of entanglement, there are many investors with a short-term game mentality into the game, that Monday's decline is enough to scare these short-term funds out of the game, after yesterday's shock, today's choice to enter the capital more value of WuXi, so I chose to enter today.
$JD-SW (09618.HK)$

Today the hang Seng index once again fell out of the momentum of the stock market disaster, the face is a bowl after a bowl, this market is more and more difficult to play!
 
 
Overnesting under the eggs, no matter what to buy today is a bowl of noodles, today is an emotional freezing point, often there will be a repair market after the emotional freezing point, but just repair, do not have too much hope, the quantity can not go up, but also repeated concussion.
 
The secondary market is the place of trading, where there are people, there must be different emotions, today in the mood freezing point + forced out of the panic plate, tomorrow the inertia of the fall, will be a very good bottom-fishing opportunity.
Short-term operation needs a strong psychological quality, the big picture, trading system, technical graphics is secondary, the control of market sentiment is the key, the "emotion" is difficult to quantify, but can be figured out.
To officially begin today's final session:
$Hang Seng Index (800000.HK)$ The hang seng index date line break to new lows, has accelerated down signs of bottoming out in the short term, so the location there is no need to panic, cheaper chips also don't be lost, in the hands of a superposition of the peripheral market is not good, short-term index against a stronger, more so now is given priority to with watching, date line pressure near 23500 level if stand again, there is a possibility of a rebound.
stock
$TENCENT (00700.HK)$ Tencent continues to fall with the index resonance, many people worry that Tencent will fall below the new low. I can only say that the probability is not big, because the fall here has nothing to do with the fundamentals, but the mood of the fall, so the space below is not big, do not blindly kill cheap chips to hand over.
 
$BYD COMPANY (01211.HK)$ BYD fell again, now is the valuation and performance matching degree is not enough, the market is expected to repair the valuation, in the superposition of the periphery of the new energy plate weakened, short-term signs of breaking. The current trend belongs to the downtrend structure, not suitable to participate in the mid-rally, below support to see around 240.
 See in the collapse of the concept of stocks, we must want to know when is suitable for bottom fishing, the core of the fall is Ali, if   $BABA-W (09988.HK)$ stop falling, it can be bold bottom fishing.
$JD-SW (09618.HK)$  $MEITUAN-W (03690.HK)$

Since this week, the overall tone of the market has been adjusted, with only a few themes that have policy expectations continuing to be active,
The meeting stressed the need to “Appropriately advance infrastructure investment”and “Increase the absorption capacity of new energy sources”, as well as the need to “Push forward the reform of natural monopoly industries such as power grids and railways”in the reform of state-owned enterprises, raised the expectation of industry mergers and acquisitions.
Green Power Conference stressed that “Increase new energy absorption capacity”, “Promote coal and new energy optimization combination”, directly benefit green power, especially thermal power transformation.
[ coal chemical industry ] the meeting stressed that “Energy for raw materials is not included in the total control of energy consumption,”meaning that as long as coal is not burned, but is used to make products, it is not energy consumption, so that the project approval process can be greatly accelerated, especially good clean coal chemical industry leading enterprises.
[ logistics ] the meeting stressed the “Acceleration of the formation of internal and external connectivity, safe and efficient logistics network”, in addition to the weekend also issued the “14th five-year”cold-chain logistics development plan, logistics and transportation itself is directly benefit from the economic recovery of the varieties.
[ hydrogen energy ] with the launch of fifteen and the continuous development of the industry, the framework of domestic Hydrogen Energy Development, guidance documents are ready.
The conference continues with the mention of seeds, and there are further amendments to the seed act, document one, and so on.
[ digital currency ] the Beijing Winter Olympic Games is an important scene of domestic digital RMB pilot, but also an important public display of “Business cards”, digital RMB ushered in an important opportunity to promote. At the same time, 2022 will also be a key year for the arrival of the Digital Renminbi.
In general, we are now at the beginning of a new round of domestic macro-policy, in this context, the industry with policy expectation will be more imaginative, so the branch with expectation of industrial policy will continue to be active in the near future.
$Hang Seng Index (800000.HK)$ Hang Seng Index continued to low volatility, from today’s trend can be seen near the low point of resistance to power, although the technical level of Hang Seng Index decline has been contained, but there is no sign of stabilisation. If fall below 23,100 points can not recover the index center of gravity down to open falling space, the upper rebound pressure 24,000, the Hang Seng Index is still in the fall channel, in the left not clear stop the fall before do not blindly chase down.
Individual stocks:
$BYD COMPANY (01211.HK)$  Jády continued to fall, moving well within expectations, Jády’s head has formed in the short term, and the resonance of the peripheral markets of the new energy vehicle sector fell. There are some differences on the repair of the valuation. On the one hand, profit growth on the other hand, whether the sales of passenger cars will continue to grow, short-term evasion is the main thing. At present, the technical level supports 240. If it falls below, there is the risk of accelerating the adjustment, short-term adjustment waiting for the end of the main.
$WUXI APPTEC (02359.HK)$ Immanuel Kant continued to fall on the negative side, but fell again after the rebound today. From the current fundamentals, on the one hand, it is negative news sentiment, and on the other hand, it is the overall downward revision of the valuation of the Pharmaceutical Fund, the main short-term maintenance shock down behavior, repair here is difficult to end immediately, short-term bias wait-and-see, day pressure 150 can not break continue to maintain shock down. Yao Ming biological short-term is mainly wait-and-see.
Tesla,    $Tesla (TSLA.US)$ a stock reviewed by some bulls, has confirmed a downtrend at the short term daily level of Tesla, just wait for it to break below the support level. As for the fundamentals, the continuous underweight has brought panic to the market, followed by a stronger interest rate, adverse growth stock valuation, especially the performance growth rate of the situation, there are some differences in the market, waiting for the end of the adjustment, the technical level of short-term pressure 1000 integer level, the support of $800 below
2318 Pingan low volatility, for the market as a whole, there are signs of a switch between high and low, the market for growth stocks is expected to be revised upward, and low value sector odds are very high, therefore, it is clear that in the near future, the Pingan refused to follow the index adjustment, short-term left-side low suction mainly, day support around 55 yuan, 63 yuan is to open the rebound space, for the safety of eight words, slow low suction, waiting to release.

Hello everyone, I'm Lao Li
There is no market that only rises and does not fall, and there is no market that only falls but does not rise. The higher you jump, the more pain you will fall, and the deeper you squat, the higher and farther you will jump in the future.
Although today the market has set new lows again, this new low can be used as a starting point for the mid-term market. Because the pessimism is released more thoroughly, from the perspective of transaction volume, the market looks like funds will enter the market after the index is at a new low. If the market goes out of a big positive tomorrow, this will further stimulate the accelerated entry of incremental funds. .
It has a mitigating effect on the short-term liquidity of the market.
$Hang Seng Index (800000.HK)$ The Hang Seng Index rebounded again after a new low, and the short-term market wind has not changed. However, after the continuous decline in the market and the recovery of the external market, there is not much room for the index to fall, but the probability of a substantial rebound in the short-term is also not large. Yes, wait for the low position to converge and choose the main direction. At the technical level, the Hang Seng Index continues to remain in the downward channel, supporting 23,000 within the day, and 24,300 above pressure waiting for the direction to be selected.
$BYD COMPANY (01211.HK)$ BYD has completely reproduced Tesla’s trend of low and high. It should be noted that the valuation is too high in the short term. Secondly, although the industry’s prosperity does not change, the growth rate of performance affects the adjustment of valuation, and with the upstream The rise in prices squeezes downstream profits, and near the end of the year, there is indeed the possibility of high-low switching. The current price is high, waiting for the adjustment to end. If the intraday support 240 breaks to open up the downward space, the upward rebound pressure 280 is an upward trend line pressure. , Wait for the adjustment to be over.
$SMIC (00981.HK)$ SMIC continues to fall today, and still maintains yesterday's view. This decline was not caused by bad news, and the sentiment fell. Kdj diverged directly upwards, which is expected to form a golden fork to drive the stock price to usher in an anti-truck. The more and more carefully this location becomes a golden pit.
$PING AN (02318.HK)$  China Ping An continues to consolidate. It can be seen that China Ping An has obvious signs of strengthening recently, and does not follow the index fluctuations. After the negatives are exhausted, it is expected to correct the decline during the year. The daily support is mainly 55 bargain hunting, and the top is stable and 63 opens. Rebound space.
$TENCENT (00700.HK)$  Tencent continued its downward trend and tested the previous lows again in the short term. The current stock price remains fluctuating at the bottom edge of the box. However, it can be seen that the volatility of Alibaba  $BABA-W (09988.HK)$ ,   $MEITUAN-W (03690.HK)$ , and   $XIAOMI-W (01810.HK)$ has declined recently, and the fundamentals have been exhausted.
China's concept stocks are now on the left, and the odds on the left are enough, but it takes time to stabilize and move up, and try to buy as low as possible.