In the process of preventing flood there are three serious mistakes

.e.，"neglecting South but saving North"

"storing flood and reclaiming"， and"abandonning the upper but protecting the lower"

of which constructing Three-Gorge Dam having been brewed would make greater mistake than the former two because of the uncorrect guidline of"abandonning the upper' but protecting the lower".The measures to harness Yangtze River should be practiced in order and in comprehensive planinng

including to。? :elerating the flood-prevention engineers on plain seriously

to eliminatr the retards in channel

to establish law strictly and to implement it，to dispel hidden danger in order to prevent the bursting of JinJiang embankment reso- lutly

to give up land planted for lake in order to recover "village rich in fish and rice"，to harness Duntinhu Lake actively

to build reserviors on branch rivers in combination with multiple use

to strengthen soil conservation in practice and to raise the level of science and management.