The characters representing silk thread are: silk, thread, warp, weft, rope, dimension, group, tassel and so on. There is a word "silk" in ancient times, and China has a tradition of raising silkworms and reeling silk since ancient times. Generally, silkworm farmers will twist the tow into twisted silk. The ancients used the shape of twisted silk to make the word "one", which means a filament, and then used it as a radical, called twisted silk edge.