What does it mean to lean forward and lean back?

Leaning forward and leaning back means to describe the body rocking back and forth (when laughing with multiple fingers).

lean forward and lean back [qiánfǔhòuyǎng] ⒈ bend the body forward and lean back. For example: "This joke is so funny, everyone is laughing. Idioms (Pinyin: chéngyǔ, English: idiom) are stereotyped words in Chinese vocabulary. Idioms are said by everyone, and they are made in words, so idioms . Most idioms have four characters, but there are also three, five or even seven characters.

Idioms are a major feature of Chinese traditional culture. They have a fixed structure and a fixed saying, and represent a certain meaning. It is used as a whole in a sentence, taking on the subject, object, attributive and other components. A large part of the idiom is inherited from ancient times, and it represents a story or allusion.

Some. An idiom is a miniature sentence. It is a kind of ready-made saying, similar to idiomatic expressions and proverbs, but also slightly different. Idioms are a shining pearl in Chinese culture.