Cai is very concerned about the home-building, has served as consultant Zhongshan County, Guangdong Dushu Honorary Adviser, Zhongshan County, the political training of the Committee Honorary Adviser.

• 蔡兴十分关心家乡建设，曾先后担任中山县顾问，广东督署名誉顾问，中山县训政委员会名誉顾问。