May 2022 15. According to the announcement issued by hancheng city, Yingshan Reservoir started construction on March 2026 10, and was completed and put into use on May 2022 15. Hancheng city, a county-level city in Shaanxi Province, is under the management of Weinan City. It is located on the west bank of the Yellow River in the east of Shaanxi Province, in the northeast corner of Guanzhong Basin, bordering Yichuan in the north, Huanglong in the west and Yang Yang in the south.