He is best known for his roles in films such as Infernal Affairs and Initial D. He is also the founder of his own multimedia platform known as "Chapman To's Late Show".

He is best known for playing Tsui Wai-Keung in the Infernal Affairs trilogy, as well as the role of Itsuki Tachibana in Initial D. He married Kristal Tin in 2005.

In 2011, To was hired as the photographer for cantopop singer Prudence Liew's album Love Addict.

Due to the platform's content being daring, down-to-earth and it's satirical way of presenting current issues, it was widely praised by Hong Kong's netizens.

[3] In 2020 Chapman To announced that the platform will be pulling out of YouTube and Facebook, and subsequently established a paid platform at lateshow.net, with subscription fee being HK$60 per month and VIP subscription HK$600 per year; the VIP members get access to special content such as his stand-up comedy live performance of 2020.

[5] To criticised the Chinese government and proudly stated to netizens to "Stop me from coming to the mainland if you've got guts.