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

The related 28-star is an important creation of ancient astronomy in China. It divides the stars passing through the south meridian into 28 groups, and each group is named with one word: horn, sound, surname, room, heart, tail, dustpan, bucket, cow, female, deficiency, danger, room, wall, depression, building, stomach, elevation, ratio, ditch and spirit. Twenty-eight stars are divided along the ecliptic and equator; Since ancient times, people have set 24 solar terms according to the appearance of the four seasons and the transit. The ancients summarized these 28 parts into four star regions, named as: Oriental Dragon, Northern Xuanwu, Western White Tiger and Southern Suzaku, and each star region has seven nights. Human hands have 28 joints, representing 28 stars.