Excluding drama serial memorabilia, Cheng has released three pictorial books in addition to four calendars and one mini pictorial in conjunction with the release of his EP in 2009. He has also authored two books and co-authored another on his hometown Taichung. He was also featured in a 2006 book on Catwalk Modelling Agency. Cheng has won multiple awards as a model and as a performing artiste. The most notable include one at the Asia Model Festival Awards 2009, in which he won the Asia Special Award. Cheng, together with Sylvia Chang and Mike He, was appointed as an ambassador for World Vision in December 2009.
2009 was a quiet year for the television star, who spent the year busy with his theatre debut, Design for Living, starring opposite stage veterans Sylvia Chang and David Wang, under the directorship of Hong Kong stage director Edward Lam. The troupe made several sell-out shows in Hong Kong, China, Taiwan and Singapore. Cheng said that it has always been one of his goals to star in a stage play and was very honoured to have been able to star in the same production as Sylvia Chang. In the same year he also released his first EP, Sing a Song. Cheng is known by his friends in the industry as one who loves to sing. Album sales were fair and the EP topped certain charts in Taiwan but Cheng failed to convince music critics of the industry. Much to the dismay of his fans, Cheng did not star in any drama series in 2009.