The origin of Lei surname in Pingyao is not clearly stated in the public information. Pingyao Ancient City is the commercial center of China in ancient times, with many famous Shanxi merchants, including Lei Lvtai. Lei Lvtai is the founder of Rishengchang Bank, and his former residence is located atNo. 1 1, Shuyuan Road, Pingyao Ancient City. Lei Lutai's ancestors settled in Xiqiangcheng Village. There is no written record about where Lei moved to Xiqiangcheng Village. There is an oral legend that Lei moved here from Pingyao County and had four brothers. One is ray; Second, settled in Youfangbao, Pingyao County; Third, settle in Haojiabao; Fourth, settled in Luo Qing village, but this is only a legend, and there is no written record to prove it.

The origin of Lei surname can be divided into several branches. For example, the ancestral home of the Lei family was called "Leize" in ancient times. "Thunder" refers to Lei Zhen, and "Ze" refers to the swamp where water and grass are intertwined. Another way of saying this is that the ancestors of the Lei family are descendants of ethnic minorities. But these are just speculations and lack of conclusive evidence to support them.

Generally speaking, there is no conclusive evidence to support the origin of Lei surname in Pingyao, which needs further study and exploration.