The cultivation business in Huainan presented by Zhang Jian is a milestone in the process of agriculture modernization ,although it could not help achieve agricultural modernization completely, but really facilitated the development of the northern rural district of Jiangsu such as enhancing the farmers cultural level, improving living environment in villages etc.

North Jiangsu coastal marsh land s influence on salt reclamation and tax in the Ming and Qing dynasties-focus on Nantong City and Yancheng City;