2. Interview with Mao Lu (pinyin: sān gù máolú) is an idiom derived from historical stories, and the relevant allusions of idioms were first found in Zhuge Liang's "The Teacher's Watch".

3. "Visiting the Maolu" was originally the story of Liu Bei's visit to Zhuge Liang at the end of Han Dynasty. Liu Bei visited Zhuge Liang three times and asked him to come out to help him conquer the world. Cottage: thatched cottage). Later generations used "three visits to the cottage" as a metaphor for sincere and repeated invitations. This idiom is generally used as predicate, attribute and object in sentences. It is full of praise.