Li Wen knew some basic medical knowledge, so he didn't know whom to listen to now.
If he had a superstitious belief in Chinese medicine, then whatever Sun Yunxiang said would be accepted as truth. If he had blind faith in Western medicine, then everything Sun Yunxiang said would be wrong.
But because Li Wen held such a high position and had a special status, he could enjoy the best Chinese medicine in the world, as well as the best Western medical care. Therefore, he must be the most rational, which also left him uncertain about whom to trust.
Li Wen looked toward Sun Yunxiang, signaling for him to offer an explanation as well.