I have a friend who loves the word "dye". The pen name was simply taken apart and used "Maple Leaf". I liked feathers and wings when I was a child. At first, my pen name was "Fantasy Feather". Later, when I got older, I wanted to change. Because I like Cangshan Erhai Lake, but I don't want to use it directly, and I also like this little thing, so I use Xanthium sibiricum. As someone answered before, as long as you don't use any radical words and the meaning between the lines is not vulgar, that's all.