A long time ago, in a small village, Xiao Li asked Xiao Si to borrow 10,000 money, but Xiao Si was afraid that Xiao Li would be dishonest, so he asked the village chief justice, and the village chief wrote down the account. The village head is highly respected, everyone trusts the village head, and the village head has the loan records of the whole village. This is the traditional way of bookkeeping. Everyone trusts the village chief, and the village chief is the centralization of the whole v...