Disclaimer: This article is a personal trading diary, not opinions or stock recommendations. The blogger adopts a short-term trading style based on quantitative analysis of mathematical models (conventional basic and technical analysis, trading based on chart patterns is outdated and ineffective in my opinion, too many people use it, similar to gambling, with more disappointments and despair than surprises, gambling always involves high consumption). The holding positions may be sold at any time (including the same day, or even the next second), but in most cases, my holding period usually exceeds 2 months. In case of a 5% total market value loss when the market is not good, a stop loss will be implemented without conditions. Additionally, making mistakes is common due to an average skill level (easier to make mistakes in a bear market). The blogger does not have the ability or obligation to give money to outsiders.