sentences:  During Chiang Kai-shek's fifth campaign against Jiangxi Soviet, he named Chen as commander-in-chief of the southern front, commanding over 300,000 troops, or 30% of the 1,000,000 total Nationalist force mobilized against the communist base.Chen's job was to blockade the southern border of the communist base and prevent them from escaping from the south.However, ever suspicious that Chiang's true intent was to take over his territory as Chiang did to the local warlords in Fujian earlier, he participated in the campaign only half-heartedly.