Ren Zhong recited the lines he had prepared long in advance.
As for what Xiao Xingyue said about "just an interview, not a review," he didn't believe it at all.
He just saw through it and chose not to expose it.
...
"So, Mr. Ren, you had prepared a large number of redundant plans in advance and merely issued orders to the desolate group based on the situation?"
Ren Zhong nodded, "Of course. I am not exactly aware of what special traits the Ruined Beast known as Demon Infant possesses, but I comprehensively analyzed past information... and planned out these hundreds of contingency plans. This is the strategy I have developed. Look..."
A moment later, Xiao Xingyue marveled, "Mr. Ren, your analysis indeed makes sense."
Ren Zhong smiled faintly, "It's just that I enjoy thinking; it's no big deal."
He was very adept at backtracing the process from the result and then providing reasonable motivations for his actions.