Xu Dao. Official website, Dantu District, Zhenjiang City, inquired that the headmaster of Sanshan Primary School is Xu, and the primary school is located in Guyang Town, Dantu, Gushi City. The school covers an area of 3 1009 square meters, with a building area of 58 19 square meters. There are 63 full-time teachers, and the undergraduate rate is 68%. "Dantu Tian Ge" is an educational business card with artistic characteristics, which is well-known in provinces and cities and at home and abroad. He won the national first prize five times, logged into CCTV four times and participated in international cultural exchanges many times.