According to historical records, in the previous Qianlong period, the old White House of Zhangshe had a' money desk', which was to open a bank account to exchange foreign exchange, decades earlier than Qiao Zhiyong in Daoguang period. In Bai Yutang, this generation does more business. According to historical records, his family's land has1.2000 hectares (each hectare is equal to 1.000 mu), 72 pawn shops and more than 70 "money tables" with bank numbers. At that time, his family was the richest man in Jiaodong (it was also a big family in the country at that time). Bai Yutang accumulated virtue and did good deeds, and lived to be in his eighties, but he died in vain.