A better/western route to the Maluku Islands.
Hongwu created a form of Martial Rule. He expected everyone to obey his rules and if they failed to do so they were subjected to execution or tortures. He was a tyrant Emperor who trusted no one but his family, if he finds anything suspicious about his advisers he would immediately have them killed or torture. This was a time in China where coups and other acts of sedition were not even attempted by the people of China because of their fear of exaggerated punishment.
Answer: nationalists: led by Chiang Kai-shek, supported by the US, more popular in wealthy cities
Communists: opposed Chiang Kai-shek, had the more effective army, supported by the USSR, More popular among poor farmers
Explanation: 100% on edge