He finishes the food that he has been slowly eating while they were talking about his gardening adventure. Even if it was spicy it was still good and Xue Yang has very minor cooking skills to go along with his gardening ability. Even if he did do some of the housework in Yi City, it didn't make him an expert by any means.

"Are you going to check and make sure I haven't actually killed them or are you simply curious about what it is that is growing?" Because this could be a very easy scheme to check and see how much of a failure at gardening he is.