The five gardens in Chengdu are only 20 years old. Why are they so broken?

1, material. During the construction of Chengdu Wuyuan Garden, due to inferior materials, after 20 years of sun exposure, the tiles outside the floor fell off and looked very broken.

2. protection. Chengdu Wuyuan Property did not take reasonable protection measures, did not regularly maintain the buildings in the community, and the primary key of the community declined.