PE (Preschool Education Chain, preschool education chain) is based on the characteristics of non-tamperable and traceable, realizes the credit penetration of the supply chain financial system, greatly improves the circulation of funds, and provides financial institutions and the whole industry chain of the real economy Downstream provides one-stop financing management services. Realize the rapid revitalization of main assets, reduce the cost of risk control on the capital side, improve the efficiency of smart contracts, and enhance the transparency of transactions. Ultimately, a win-win situation will be achieved for educational institutions, data users, and users.