Which issue is "Mao's son is not easy to look like tomorrow"?

The second, fifth, seventh and so on. Mao Nan participated in the first season of Tomorrow's Son on 20 17, in which the second period 1 hour sang "If I become rich one day" for 20 minutes and 48 seconds, the fifth period 1 hour sang "Feeling like a superstar" for 43 minutes and 00 seconds, and the seventh period 1 hour and 53 minutes.