Ren Xiaosu had already given up. He could foresee that in the next six and a half days, the palace would definitely brew a lot more trouble.
Therefore, when that young man asked everyone about their expertise, he simply told him it was singing nursery rhymes.
The reason why the young man chose Ren Xiaosu as the first person to ask was mainly to test him out. After that, he wanted to see how the others would respond so he could get a deeper understanding of the others on the team.
But the moment he posed that question to Ren Xiaosu, it might as well have ended right there. It was impossible to continue asking any further!