There is one in Chengdu. Chengdu Dongying Times Practical Surveying and Mapping Training provides zero-based system survey learning, including total station training, RTK use learning, GPS training, tunnel survey, road and bridge survey, building surveyor training and engineering cost engineer training. The address is located at No.055, Building No.4 1 KLOC-0/Floor, North Section 3, First Ring Road, jinniu district, Chengdu.