I have been busy doing homework, casually placing a few orders, all related to eating, so I didn't pay much attention and just kept placing orders. Everyone thought it would move according to my wishes, but unexpectedly it took a big hit, and the profits have nearly all been given back.
My family advises everyone that when you are busy, don't mindlessly keep placing orders; you still need to analyze slowly.
The principal amount from the past few days has been withdrawn, and I've left 100u, it will stand up.