[2] Realising his passion for performing, Kong invested his free time and resources to singing and dancing, eventually winning a contract with a record label.

[4] In 2018, Kong auditioned for ViuTV's reality talent competition Good Night Show - King Maker and finished fifth place, earning him a spot in the twelve-member boy group Mirror.

Kong made his acting debut in television drama Retire to Queen (2019) with a guest appearance in the first episode.

He then starred in the martial arts drama Warriors Within (2020), co-starring Stephen Au and Hedwig Tam.

His fourth solo single Black Breath (黑之呼吸), released in March 2021, peaked at number two on the 903 Top 20 and Metro Radio Chart.

A teaser of a collaboration between Kong and Lokman Yeung was first released on Mirror's Instagram account, as part of their summer project.

In November 2022, Kong's first drama series as main role, Rope a Dope (繩角) was aired on ViuTV.