Who can tell me where this cartoon routine comes from? Why do people like Yu Jie always smile in this position?

The queen's three-point smile is a linguistic act and one of the lovely attributes in ACGN subculture. The earliest three-point laugh of the Queen may come from Rumiko Takahashi's comic book Half a Horse.

The word "Queen's Three-stage Laughter" is a common name for a typical laugh of a queen-type character.

Japanese means "o-hohohohohoho". Chinese can be homophonic as "oh-hehehehehehehehehe" (also used as "oh-ho-ho-ho").

The beginning of "Oh-"is a long tone, rising tone (Oh ~ ↗);

The first "ha" is the beginning of the second half sentence, which is the highest tone of a series of "ha";

The following "Hehehehehe ..." is a falling tone with indefinite syllables, usually three to five syllables.

As a cooperative action, when the queen laughs three times, she often puts her back on her mouth and makes a covering action.