What does Evergrande mean by one policy on the first floor?

Evergrande's "One Building, One Policy" is the real estate operated by Evergrande Group, and each building has its own policy. Inquiring about the relevant information of Evergrande's "One Building, One Policy", we can know that due to the financing difficulties nationwide, Evergrande Group has adopted a separate policy for each building, which is referred to as "One Building, One Policy" for short.