In ancient times, a weak crown meant 2 years old. "Twenty weak crowns, standing at 3, not confused at 4, knowing the destiny at 5, spending 6 years, being 7 years old and rare, and being 8 years old", so you can find some poems about weak crowns.

For example, "A weak crown makes a gentle man, and a distinguished man reads a lot of books."

"It's wonderful to be poor before you are weak."

"There is no way to volunteer, waiting for the weak crown of the final army; I have a pen, and I love the wind of Zongxi. "