This paper gives an account of the water stopping project with focus on the project design and construction techniques.

Primary analysis on the erosion-accretion change of the seabed around Yangshan Harbor before and after the plugging offshoot project;

The closure project of the south branch of Lingkun in Oujiang River can bring out comprehensive benefits such as solving land demand,providing city development space,alleviating water resources shortage,shortening the length of sea embankment and improving the flood drainage condition in the east of Longwan area.

This paper discusses the connotation of CE philosophy, emphatically describes it from the information theory point of view and presents the reason and essence that CE is superior to sequential engineering .