In the secondary market, I adhere to the "Two No-Touch" principle:

Don't touch at midnight —— In the dark, you can't even tell who your opponent is; it's too dangerous.

Don't touch during the day —— The Americans are still asleep, and without main forces in the market, it looks unreliable.

The real opportunities often arise when they have just woken up, and we are still not tired. When do you think is the best time to get in?