I love you
Explain birds: birds; Beast: Beast. Birds, running beasts. Generally refers to birds and mammals.
The source is Wang Han Yanshou's "Luling Photoelectricity Fu": "Birds and beasts are born in wood."
Structural joint idioms
Used as object and attribute; creatural
For example, the bell is the treasure of the elixir, but it is not. How can you tell a male from a female? ◎ Ming, Wu Chengen and Journey to the West: the 71st time.