How many people died in the 1668 Tancheng earthquake with a magnitude of 8.5, the largest earthquake in Chinese history?

According to historical records, there were more than 1,500 prefectures and counties under the jurisdiction of the Qing Dynasty at that time, and more than 400 prefectures and counties were affected by the 8.5-magnitude earthquake. Tancheng and Linyi are the epicenter areas. According to statistics from the Ministry of Household Affairs of the Qing Dynasty, more than 50,000 people died in the Tancheng earthquake with a magnitude of 8.5. The earthquake death toll accounted for three thousandths of the total population at that time.