Millions of people were forced to leave their homes due to the increasing climatic hazards that have happened over the past 20 years. In order to improve the quality of post-disaster relief, the team BJTU+, who is one of the participants in the 2021 Solar Decathlon China (SDC) competition, went to Zi Zhong County in Sichuan Province, a county that has been heavily affected by the flood, to further explore the post-disaster relief plans in line with the international system.