What does the idiom about the dragon spitting out beads mean?

"The dragon spits out pearls" is not an idiom. There are only two idioms that contain "spit pearls":

1. Who can not exclude "spit pearls in Ze"?

Pinyin: tǔ zhū yú zé, shuí néng bù hán

Explanation: Hold: Hold in the mouth. If a pearl emerges from the water, everyone will pick it up and hold it in their mouth. It is a metaphor that when the king's power falls, everyone will try to seize it.

Source: Fan Ye of the Southern Dynasty, Song Dynasty, "Book of the Later Han Dynasty, Biography of Zhai Ao": "Therefore, Confucius said: 'Who can keep it out of spitting pearls into the lake?' Self-interest is still out of the water, who can not exclude it?"

Pinyin code: t z y h

Usage: as object, attributive; used in written language

2. Spitting pearls and jade from the mouth?

Pinyin: kǒu tǔ zhū jī

Explanation: Zhu and jade: both are jewelry. The round ones are called beads, and the round ones are called jade. Describe speaking with literary talent.

Source: A fold of Yuan Dynasty's "Drunk Writing of Chibi Fu" by Anonymous: "My wife heard that Su Shi had a beautiful mind, spoke pearls and pearls, and had a talent for the whole world."

Example Sentence: He often spits out pearls and has extraordinary opinions.

Pinyin code: k t z j

Synonyms: ? spitting becomes pearls

Usage: as predicate and attributive; to describe speaking with literary talent

English: The mouth spits out pearls.