His style of prose writing is mostly discursive rather than argumentative. In terms of political philosophy, Zeng was a firm follower of Ouyang Xiu. For this reason his reputation as leader of one of the eight great schools of philosophy has largely been overshadowed by that of his mentor. Among Zeng Gong's collected works are fifty chapters of "Yuanfeng Leigao" (), forty chapters of the "Xu Yuanfeng Leigao" () and thirty chapters of the "Longping Ji" (). In May 2016 a letter by Zeng sold for ¥ 207 million at auction, setting a new record for a piece of Chinese document.