In 2005, Cheng played the part of Snow White in the Hong Kong Disneyland opening ceremony.
Cheng recorded and showcased her music video, Connected Hearts on an October 2007 episode of the popular Hong Kong television show, Enjoy Yourself Tonight.
In September 2008, Cheng launched her acting career on the hit TVB sitcom "Off Pedder" (畢打自己人）. Cheng's character, Joyce Yu, was a recurring role on the sitcom which ran for 337 episodes. Cheng also sang the ending theme to the show, "No One Is Perfect" (無人完美）.
On 31 July 2010, Cheng guest-starred in "Off Pedder" fellow co-star, Cholam Wong (王祖藍）'s first stage show at the Queen Elizabeth Stadium. Cheng performed in all three of the sold out shows and wowed audiences with her comedic ability.
The press conference was held on 26 February 2018.