1. College of Resources Environment and Tourism, Capital Normal University, 105 North road of the Western 3rdRingroad, Haidian District, Beijing 100048, China
2. High School Division, Yuying School, 11 West Street of Wanshou road, Haidian District, Beijing 100036, China
3. School of Geology and Geomatics, Tianjing Chengjian University, NO.26, Jinjing Road, Xiqing District, Tianjin 300384, China
4. College of Chinese Calligraphy Research, Capital Normal University, 105 North road of the Western 3rd Ringroad, Haidian District, Beijing 100048, China