These days, the market has been fluctuating.

To be honest, it’s easier said than done—you can say trading at night is “easy to do,” but it’s also hard.
It’s not like a “smooth” trend market, which is relatively easy to manage.
This kind of market is suitable for arbitrage: sell high and buy low.
But even though it sounds simple, executing it in practice isn’t easy—you can easily get hit from both sides.