The problem of correcting sick sentences in Chinese
China's traditional opera art is profound and colorful: Beijing Opera is graceful and gorgeous, Kunqu Opera is elegant and exquisite, Yue Opera is melodious, Qin Opera is unpretentious, and Bangzi Opera is sonorous and sad.
The pause should be a comma
This is what she said, so it is added.
Example: "I want to sleep."
If you want a comma outside, it is: I agree that "books are the ladder of human progress".