Xin'an County
According to the 1819 edition of the "Gazetteer of Xin'an County", the population of Xin'an County was about 18,000 people in 1642, just prior to the collapse of the Ming dynasty, and the total population was about 4,000 by 1672, three years after the reoccupation of the area at the end of the Great Clearance.