While Long the Wish Dragon is voiced by John Cho, he is voiced in the Mandarin version by the film's producer Jackie Chan.
Long Zhu is Mandarin for Wish Dragon.
Jackie Chan's second Mandarin Chinese voice acting performance in an animated movie, after Kung Fu Panda 3 (2016). While Li Shan is voiced by Jackie Chan (who also voices Monkey in both the English and Mandarin Chinese versions of the films) in the Chinese version, his voice in the English version is Bryan Cranston.
Constance Wu and Ian Chen co-starred for six seasons on the family sitcom Fresh Off the Boat (2015).