You might want to begin with THE CAMBRIDGE HISTORY OF CHINA series. Some articles on Chinese economic history are:
Volume 9, "Economic developments, 1644-1800" by Ramon Myers and Yeh-chien Wang.
Volume 11, "The economic trends in the late Ch'ing empire, 1870-1911" by Albert Feuerwerker.
Volume 12, "Economic trend, 1912-49" by Albert Feuerwerker.
Hsiang-Ke Chao