He wasn't joking.

In fact, the reason why Ling Chuxi was able to deduce and improve the pill formula of the demon spirit pill so quickly was, on one hand, related to her innate talent and in-depth understanding of medical and pill theory. On the other hand, it was because she had accumulated a wealth of experience when she first deduced the pill formula of the spirit Recovery pill. Although this demon spirit pill was a secret of the demon race, no matter how complicated it was, it could not be more complicated than a Spirit Recovery pill that was personally refined by a generation's alchemy venerable.