"Chinese naturalist" . "history of science in China" . "were invented in China" . . "ancient Han Chinese numeral" . "History of science and technology in China" . "historians of science and technology in China" . . "Chinese artisan" . "Chinese science and technology" . . . . "Chinese science" . "ancient Chinese" . "scientific and technological" . "China" . "technological contributions from China" . "Han Dynasty" . . "engineers" . "Chinese technology" . "classical Chinese innovation in science and technology" . "Chinese civilization, science" . "history of Chinese technology" . "History of science and technology in China" . . "scientific" . "Jesuit missionaries" . "engineering projects" . "history of science and technology in China" . . "Chinese mechanical technologies" . "Chinese" . "Chinese scientist" . "history of Chinese science" . "historians of Chinese science" . "historian of Chinese science" . . "Historian of science and technology in China" . "history" . "Chinese traditional" . "other sciences" . "works on science and technology" . "invented in China" . . . "science and technology" . "science and technology in China" .