Ian Chan Cheuk-yin (Chinese: 陳卓賢; Jyutping: can4 coek3 jin4; born 9 June 1993), is a Hong Kong singer-songwriter, actor, and a member of the Cantopop group Mirror.

[10] In 2018, Chan's entertainment company suggested that he participate in the ViuTV Good Night Show - King Maker competition.

[9] Throughout the show, Chan exhibited his musical talents, singing in Cantonese, English and Mandarin, as well as performing with a guitar and a piano.

[12] On 3 November 2018, Chan debuted as a member of MIRROR alongside 11 of the other participants from the show under the management of Ahfa Wong [zh].

[15] Chan was asked if there was competitive pressure releasing music at the same time as Keung, since the two were often compared, being the top two finalists of Good Night Show — King Maker.

Chan responded that he and Keung instead believed that promoting together was mutually beneficial, hoping that it could get more fans to discover and listen to both their songs.

[16] Chan participated in the songwriting for "另一個諾貝爾" (Another Nobel), working with Cousin Fung and Lam Bo [zh].

He also noted that it was difficult getting the feel for the song when he first started recording, but later got a better grasp of the intended emotion after watching Battle Angel (OVA).

[16] In December 2019, Chan and fellow group members began filming for We are the Littles [zh], portraying volleyball players who work together to overcome adversity and become the best team.

Chan creates the imagery of using water as a coffin and converting one's body into dessert as an analogy for one's willingness to self-sacrifice if it means it will help others succeed.

Chan participated in writing the music for "蝸牛" (Snail), performed by his group member Anson Kong.

[19] On 29 March 2021, Chan shifted away from his usual dark and serious music style with the release of his upbeat love song "DWBF".

Chan's character embodies the "generation slash" [zh], having the desire for flexibility and freedom, taking up many different jobs, such as becoming an actor / artist / cook / delivery courier.

[21] The trio start up a small detective business to solve miscellaneous problems (as Chan's character says, they will do pretty much anything, as long as it does not break the law).

The drama touches upon topics such as abandonment, grief, honesty, integrity, self-determination and choosing one's chosen family.

In 2024, Chan released a series of songs that are related together, with him being the main character (Teddy Bear) and Natalie Hsu being the heroine.