College of Geo-Exploration Science and Technology;
Jilin University;
Changchun 130026;
China;
College of Archaeology;
Jilin University;
Changchun 130026;
China;
Key Laboratory of Applied Geophysics;
Ministry of Natural Resources;
Changchun 130026;
China;
Sumicheng ancient city site; high-density resistivity method; archaeological exploration; electrical resistivity structure;