I discovered that I still have some BTC in my wallet. It's not much use to leave it in the Binance Web3 wallet, so I might as well withdraw it. Upon doing so, I suddenly realized that the miner fees for Bitcoin are really cheap—only 0.00001104 BTC. What does that mean? At the current price, it’s only about 1.1 USD! Just need 1.1 USD! Ah! Ah! Ah!!! Bitcoin really is fair to everyone.

However, it did take a bit of time—sent at 21:01 and received at 21:16. The on-chain time was about 15 minutes.

This transfer time is indeed not very suitable for merchants to receive or make payments. I wonder if the Lightning Network will be faster; I'll try it next time.