C1093 East-west combination

In reality, An Defu had already "sold himself" to the nether spirit. But even if the nether spirit truly did exist, he didn't even bother to personally punish An Defu because once An Defu died, his soul would naturally fall into the Underworld and forever serve the nether spirit. This was the content of the transaction.

Through this kind of trade, An Defu obtained a strong power of undead