Dingxian vs Qing

Dingxian

name

  • Synonym of Dingzhou, a town in Hebei, China. 

  • Synonym of Ding County in Hebei, China. 

Qing

name

  • Qing dynasty (1644–1912), the last imperial dynasty of China. 

How often have the words Dingxian and Qing occurred in a corpus of books? (source: Google Ngram Viewer )