What are the idioms of feet, dragons and snakes?

Gild the lily _ idiom explanation

Pinyin: Hua shétiān zú

Interpretation: Add feet to the snake when drawing it. It is not only useless but also inappropriate to do something superfluous. It is also a metaphor for fictional facts.

Source: "The Warring States Policy Qi Ce II": "There are not enough snakes, but the child is safe?" Shi Ming Naian's "Water Margin" is the hundredth time: "The general's achievements have been made, and his prestige is great. You can stop." Going forward today, if you don't like it, is just like' gilding the lily'. " .

Ex.: This is also true, not a person who makes books. ★ "Flower Moon Scar" returns to May 1 day