What does it mean to be pitied by Chai Fei for a long time?

First, "should" means-should, probably, possibly.

Unfortunately: cherish.

Square tooth: the beam under the wooden sole shoe.

Moss: Moss, a kind of green moss.

The meaning of "pity your dog's teeth, seal the moss, and Chai Fei won't open for a long time"-probably the owner loves the moss and is afraid that my wooden shoes will leave footprints on it.

Secondly, "I should feel sorry for Chai Fei's long absence" comes from the ancient poem "A garden is not worth visiting" written by Ye Shaoweng, a poet in the Song Dynasty. The attached original text is as follows:

This park is not worth visiting.

Burning Weng with pine leaves

Perhaps my master was worried that my wooden shoes trampled his precious moss and tapped Chai Men lightly, but no one opened it for a long time.

Spring can't close the garden, and an apricot will go out of the wall.

translate

Perhaps the owner of the garden was worried that my clogs would trample on his precious moss and tapped Chai Men, but no one came to open it for a long time. But the spring scenery in this garden can't be caged after all. Look, there is a pink apricot flower on the wall.

Three. About the author:

Ye Shaoweng, a poet in Song Dynasty, was born in Longquan. The ancestral home is Jian 'an (now Jian 'ou, Fujian), surnamed Li, and the heir is Longquan (now Lishui, Zhejiang) Ye. The year of birth and death is unknown. He used to be a junior official in the imperial court. His knowledge comes from Ye Shi, who has lived in seclusion for a long time by the Qiantang West Lake. He has close contacts with Zhen and once sang with Ge.