Zhang Lei, john young, Li Sisi, Zheng Yi, Zhang Yu. In 2006, a large number of outstanding program hosts were selected from the Challenge Host Contest, and Ma Dong was the host and producer to plan. The top six hosts can enter CCTV. The first one is Zhang Lei, the second is John Yang, the third is Li Sisi, the fourth is Zheng Yi, the fifth is Zhang Yu, and the sixth is Gu Bin.