[4] His forecasting of a decisive win for Tsai Ing-wen in 2020 Taiwanese presidential election was deleted from Fudan's website, hours after its release.

American political scientist Richard Ned Lebow thinks Tang produced a non-determinist and non-reductionist approach to social evolution that is distinct from and critical of evolutionary psychology.

American political scientist Robert Jervis thinks Tang puts the evolutionary approach through its paces and shows how selection, variance, and inheritance operate to explain both macro and micro Social Developments.

American political scientist Peter J. Katzenstein thinks Tang succeeded in developing and defending the claim that "evolutionism triumphs over all other explanations of the natural and the social world.

"[12] In a 2016 article, Tang criticized a paper by Quamrul Ashraf and Oded Galor which claimed that genetic diversity has a relationship with economic development.

"[14] According to a Stimson Center's article, Tang is the "only prominent Chinese scholar who publicly predicted a war between Russia and Ukraine" before May 2021, through a model of state behaviour he developed.

He even thinks that some researches about ancient China, such as Zhao Tingyang and Yan Xuetong's works, are a waste of public money.

He thinks Chinese people should learn from the experiences of modernisation of various counties, to better modernize China and have a say on global affairs.