What does the star mean? Is it directly related to human knuckles?

The related 28 stars are an important creation of ancient astronomy in China. The stars passing through the south latitude are divided into 28 groups, and each group is named with one word: horn, clang, surname, room, heart, tail, dustpan, bucket, cow, female, deficiency, danger, room, wall, kui, building, stomach, ang, Bi, Gou and Shen. Twenty-eight stars are divided along the ecliptic and equator; Since ancient times, people have set 24 solar terms according to the appearance and transit time of the four seasons. The ancients classified 28 parts into four large star regions, and named them: Oriental Dragon, Northern Xuanwu, Western White Tiger and Southern Suzaku. Each star region has seven nights. Human hands have 28 joints, representing 28 stars.