The basic meaning of "children" is children, such as children and child labor; The extension means underage servants in the old society, such as extremely young people.
In the use of the old saying, "Tong" is also often used as an adjective, indicating baldness, such as Tongshan.
The basic meaning of "building" is the pestle of rammed earth, such as "Xiang Wang cut Qi, built it with boards, thinking that his soldiers are the first"; The extended meaning is to build and repair buildings, such as buildings and buildings; Rooms, such as "fear of people entering small buildings, isolated from the world."
In daily use, "bamboo" refers to ancient stringed instruments.