Wikipedia definition
1. Haiyuan CountyHaiyuan County is a county under the administration of Zhongwei city in Ningxia Hui Autonomous Region of the People's Republic of China. It originally belonged to Gansu province. The county has a total area of 6897 square kilometers, and a population of approximately 360,000 people. It was the site of the 1920 Haiyuan earthquake, which killed at least 200,000 people.
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