Which slag is slag?

Check. Look up surnames, polyphonic characters, when used for surnames, read (1), one of China surnames, ranking 397th among hundreds of surnames. Mainly from the surname Ji, belonging to the Han nationality. During the Spring and Autumn Period (from 676 BC to 652 BC), the son of Boqin (Ji surname) and Duke Zhuang of Lu (now Shandong Province) was named Viscount Huan and ate in Chayu (the ancient genealogy wrote "Zhe"). Because of the name of the land, Cha Yan.