In the blink of an eye, the ETF's second-in-command has become a shanzhai coin, which can rise by 20 points in a day, aside from being a shanzhai.

The only outcome of playing contracts is liquidation, with just one mistake out of ten leading to account wipeout. Don't listen to others saying that contracts can make money; if you're lucky, you might earn a few days' worth, but ultimately you'll just be waiting on the rooftop. Cherish yourself and protect yourself; don't play contracts.