He does have it.
It's just that he had already promised cooperation with the Bai Family Patriarch, and this thread of Yin Emperor's luck was supposed to be given to the patriarch's daughter. Once he has made a promise, he generally wouldn't go back on his word.
However... his brow furrowed slightly, as he suddenly felt that he should prepare several more threads of Yin Emperor's luck.
"Immortal Cancer" was completely random in its occurrence; no one could predict whether it would afflict him or his family and friends in the future. He thought about the possibility of returning to the underworld to gather some more.
Acquiring Yin Emperor's luck was not a difficult task for him.
