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.
After searching for a long time, I found the method to convert usbc to usdt. If you are a beginner and accidentally changed b to usbc and want to switch it back, just go directly to isdc/usdt and you will find that selling the order will convert the currency to usdt.