Title: Ming Qing shi qi Huang He shui huan yu xia you di qu cheng shi bian qian yan jiu
Subjects: Flood control, History, Cities and towns, City planning, Social change, Social conditions, Qing Dynasty (China)
Places: China, Yellow River, Yellow River Valley, Yellow River Valley (China)
Time periods: Ming dynasty, 1368-1644, Qing dynasty, 1644-1912