What does it mean when a crow falls on a pig and sees that others are black but not himself?

Two-part allegorical saying: "Crows lie on pigs-they can't see themselves when they see other people's bodies are black".

This sentence is usually used to mean that you only see other people's shortcomings or problems, but not your own. Black: Pun, referring to the color of crows and pigs, referring to shortcomings or faults.

Source: Xin Min's Six Sons of the Yellow River: "As soon as Ai Ai left, Dong Zaizhu muttered,' The crow lies in the pig, but only sees others, but can't see its own black body'." Tiesuo said,' In Zhu Na, the girl's words are a little spicy and reasonable. How can you say that?

morphological character

Bald-nosed crows, western Western jackdaw crows and big-billed crows are more common in China. Bald-nosed crows are all black, with no feathers on the back of their mouths and gray skin. The white-necked crow has black feathers and a unique white collar.

Western jackdaw in the west is a small crow with a white chest and a white collar, and the rest are black. Crows with big mouths are big, with thick mouths and dark bodies. Bald-nosed crow, western Western jackdaw and big-billed crow are the main mixed wintering birds in eastern and northern cities of China in winter.