What does the left upper eyelid twitching mean?

I remember there was a very popular song more than ten years ago, which roughly meant that if your left eyelid twitches, good luck is coming, either love is coming or you are about to get rich. People have always believed that the left eyelid twitching is a symbol of good luck. Later, it was debunked by science, saying that the left eyelid twitching is just caused by poor sleep. So, is the left eyelid twitching, which has always been considered a symbol of good luck, a good thing or not? Otherwise, what does skin twitching mean? Let’s take a look at the physiognomy column.