Inquisitive since he was a child, Cheng frequents cinemas in Taipei's Hsimenting district, and researches American and Japanese science fiction cartoons, movies, robots, and video games. He often laments that the Chinese-speaking world rarely produces works of science fiction that can stand with those from America or Japan.
從小喜歡問東問西，流連於台北西門町電影院，鑽研美日科幻卡通、電影、機器人、電玩的鄭運鴻，常感嘆華人世界少有可以與美日科幻影片相比的自製作品。