I bought a house in the Oriental Blue Ocean of Huaikuang, Binhu District, Hefei. I found a loophole the day I got the key and eight loopholes the next day.

Because you only have a contract and warranty relationship with the developer, you can directly find the developer (or find the representative of the property department or construction unit entrusted by the developer).

You are protected by the terms of the contract and the consumer rights law. You can complain when the property department and the developer don't care. Complaints should be made to the local "Construction Engineering Quality Supervision Station" or the local "Consumers Association".

Repair method: chisel out the leakage part of the external wall from the outside and fill it with cement mortar with cement content of 1:2 and 15% alunite expansion agent.