1861 in China Qing'an County 1862 in China Restriction site Zhixin High School Goh Keng Swee Yao Qing'er Yue Qingrui Peristaltic robot Wu (surname) List of members of the Chinese Academy of Engineering Ammonia production Innovation management Environmentalism in China List of piezoelectric materials Inkjet technology Cen Chunxuan Viceroy of Min-Zhe King's War