Beijing is one of the cities with the most world cultural heritage in the world. Chinese scholars have traced how Beijing's central axis came into being and how it changed, looking for answers to the question "Why did Beijing become Beijing?" China News Service's "East-West Question" specially launched the "Beijing Rhythm" series, which tells the stories of the discovery, research, protection and development of cultural heritage sites such as Beijing's Zhoukoudian Peking Man Site, Xiannong Altar, and Shougang Park.