Introduction to the ruins of Donghekou Primary School: Donghekou Primary School is a courtyard village primary school with 108 students and 7 teachers. When the "5.12" earthquake occurred, the teacher quickly organized students to take refuge under this pear tree on campus. The school was buried under the mountain in an instant. The three teachers He Tianyi, He Fagui and He Qingfang who were the last to evacuate tightly protected the three students He Fengqiong, Yang Jinfeng and Liu Ya with their bodies. All six teachers and students were killed. Donghekou Primary School has become an eternal memory of people, but the national flag on the pear tree on the campus is still flying.