"Chemistry?" Xue Yang considers the word for a moment. It's foreign to him but perhaps if it involves poisons it might be useful. In that case he wonders if maybe he can request the assistance of Senku when it comes to creating such things if it involves some sort of advanced science.

Xue Yang is used to simply experimenting on whomever or whatever is available to get the outcomes he desires but he knows that is not going to be completely possible on the train. perhaps having a book about what to combine would make things easier.