[2] It was reported that he spent approximately HK$2.24 million on this campaign, mostly on advertising and meals.

[3] Tang ran in Kowloon East in both the postponed 2020 and 2021 Legislative Council election, and returned to the parliament after the absence of pro-democracy forces.

In August 2022, after Nancy Pelosi visited Taiwan, Tang said "China will take resolute and powerful countermeasures to protect its sovereignty and security interests.

"[6] In September 2023, Tang drew criticism for the legislation, with former lawmaker Abraham Shek asking "They should table the bill with the university’s endorsement.

[10][11][12] In the 2019 District Council election he ran for a seat on Sha Tin District Council in the newly created Shui Chuen O constituency, but lost to pro-democracy candidate Lo Tak-ming of Community Sha Tin.