Personally, Zheng Dong's voice is better than Jacky's. Although Zheng Dong's fame is not as great as Jacky's, Jacky's voice has too many nasal sounds, that is, too many falsetto, which makes him feel bored, and Zheng Dong's voice is more natural and comfortable than Jacky's. For the record, none of them are my idols. I just give my true feelings as an observer, not against anyone! If a fan offended anyone, I'm really sorry, please forgive me! In fact, both of them are very good. Zheng Dong lost because he didn't have many songs and didn't produce as much as Jacky. And many of Jacky's songs have become classics, and I like them very much.