The course of the seepage lines calculation of the unsteady seepage flow about the homogeneous earth dam before design and the concrete coreˉwall dam after design was stated by taking Mengshan Reservoir of Xinjian County of Jiangxi province as the example.

Study on the bryoflora in Yunmeng Mountain, South Hebei Province, China;

Trace fossils from Yunmengshan Formation(Ruyang Group)of Lushan County, Henan Province;