Why are there so few rooms left in Dongan Central Primary School in Shangcai County?

Dongan Primary School was founded in 1950, and the school site is located near Dongan Village Committee in Pingding Town. The school covers an area of more than 8,000 square meters, of which the campus covers an area of more than 5,000 square meters and the off-campus sports ground covers an area of 3,000 square meters. The school has two teaching buildings and a comprehensive building. There is an ancient city built in War of Resistance against Japanese Aggression's time on campus. There is not much left in the central primary school because of the frequent flooding.