There is no idiom that contains both "autumn" and "worm", but only "autumn" or "worm". Details are as follows:
One day three autumn: three autumn: three quarters. It means not meeting for one day, just like three quarters. It means that although the separation time is short, it feels very long. Described as eager yearning.
Ten thousand generations: one thousand years, ten thousand generations. It refers to a long history from generation to generation.
Each has its own advantages: thousands of years, stretching for a long time. Each has its own value of existence. It means that each person has his own strengths and characteristics.
Red maple welcomes autumn: the fiery maple trees welcome the arrival of autumn.
Spring orchids and autumn chrysanthemums: orchids in spring, chrysanthemums in autumn. The metaphor has its own merits.
Cock and worm gain and loss: It is a metaphor for small gains and losses, which are insignificant.
Carving Insect Seal: Insect script and carved symbol are one of the eight styles of Qin script, which were learned by children in the Western Han Dynasty. It is used as a metaphor for small skills.
Worm arm and rat liver: It is a metaphor for something extremely small and worthless.
Rat bite and insect bite: refers to the rat bite and insect bite.
Worm Talk Ice: It means that people are limited by their knowledge.