Whether Long Term still Aligns

As a newbie long-term investor, I do not think of stop loss or take profit purely based on whether I have earned x% or lost y%. For example, majority of my HK stocks are in the big red, but I have zero intention of selling them because I believe China's intention is to exert their authority, not to kill off everyone.

Looking at it another way, I ask myself, will I buy the stock if I am not in the long position now? If no, then I will cut the loss or take the profit.