How many Wangs immigrated from Shanxi Sophora japonica to Yuzhou?

There are 8 12 households in the Wang family who immigrated from Shanxi Sophora japonica to Yuzhou. According to the records of history books, local chronicles, genealogy and the investigation and textual research of many experts and scholars, most of the Sophora japonica immigrants in Hongdong were organized official immigrants, which began in Tianfu period in the early Jin Dynasty and lasted for more than 600 years in Qianlong period in the Qing Dynasty. The number of immigrants is more than 20 times, and there are 18 times with conclusive documents. Among them, during the Hongwu period of the Ming Dynasty, the number of immigrants was the largest (10 times), and the number of immigrants reached more than 800,000. Immigrant surnames almost cover more than 100 surnames that are common in the north.