What does anxiety mean?

diligent

(Wang Xizhi) once wrote a book with others: "(Calligrapher) Zhang Zhi is reading in the pool, and the water in the pool is all black. If you are worrying, it may not be the last one. "

If others are as diligent as he (Zhang Zhi), they may not be inferior to him.

I don't understand, welcome to ask questions!

Hope to adopt, thank you!