Although Xiang Kun was unable to eat, when he started cooking, he would often taste the dishes to determine their flavors for adjustments. Therefore, his sense of taste, although not as evolved as his specifically trained and guided senses such as vision, smell, and hearing, was still much more delicate than that of ordinary people. Combined with a more powerful sensory information processing capability of his brain, even when eating the same food, he was usually able to taste more, deeper layers of flavor than others.
However, this piece of Napoleon cake "co-manifested" by Old Xia gave him a very familiar taste.
He knew very clearly why this taste was familiar, not because he had tasted it before, but because — in Old Xia's dream, he had experienced the taste of this cake through Old Xia's perceptions.
This completely identical taste perception made him realize something was wrong.
