Three masterpieces of historical geography

The three historical geographers are Tan Qixiang, Hou Renzhi and Shi Nianhai. Their masterpieces are:

1. Tan Qixiang's History of Historical Geography of China: one of the founders and pioneers of historical geography in China.

2. Hou Renzhi's Historical Geography of Beijing: This book studies the spatial structure, historical geography, water system and lakes of Beijing.

3. Shi Nianhai's research on the historical geography of the Loess Plateau: Combining historical geography with environmental science, politics, economy, military affairs, culture and other disciplines, the historical geography of the Loess Plateau was comprehensively and systematically studied.