This surname Zhang, which was handed down directly from the Yellow Emperor, was named after Qingyang, which is south of Qinghe (now east of Qinghe County, Hebei Province) in China, and was named after Zhang in Hebei Province.
According to Genealogy, in the Spring and Autumn Period, there was a doctor in the State of Jin named Zhang, whose grandson was also named Zhang. In addition, Zhang was an official in the Jin Dynasty. After Korea, Zhao and Wei carved up the State of Jin in 403 BC, most of them moved away with the capitals of the three countries except some. Among them, Zhang, who moved to South Korea, had a great influence, and he entered the DPRK as an official in past dynasties. South Korea started in Pingyang (now southwest of Linfen, Shanxi), then moved south to Yiyang (now Hancheng, Yiyang County, Henan Province), then moved to Yangzhai (now Yuzhou, Henan Province), and finally moved to Zheng (now Xinzheng, Henan Province). Zhao Chu established Jinyang (now southwest of Taiyuan, Shanxi), then moved to Zhongmou (now west of Hebi, Henan), and finally moved to Handan (now Hebei). Wei started from Anyi (now northwest of Xia County, Shanxi Province) and later moved to Daliang (now Kaifeng City, Henan Province). It's for the Zhang family in Shanxi, Hebei and Henan.