1. Public comment official website shows that Hailin No.4 Middle School has a good environment, covering an area of 55,000 square meters, with a building area of 1.3 million square meters and a campus greening area of 1.29 million square meters. The school was rated as a provincial "green school". Chaihe High School occupies a smaller area than Dalin No.4, with insufficient greening and a better learning environment.

2. official website, Heilongjiang Education Bureau, inquired that Dalin No.4 Middle School has good educational facilities, sports ground 1000 square meters, equipped with multi-functional classroom hall, electronic lesson preparation room, physical and chemical laboratory, general technology laboratory and psychological consultation room. There is a complete and systematic modern education and teaching management system. The educational facilities in Chaihe High School are not as good as those in Hailin No.4 Middle School.