C199 Cave
Seeing him so insistent, Old Ruler Taishang sighed and didn't say anything more.
He could guess that Zhang Cheng must become stronger because of his obsession.
Zhang Cheng thanked Old Ruler Taishang again and left. On the way, he met Lan Er again. Lan Er helped him change his sorry state into nothing. Coincidentally, Zhang Cheng followed Lan Er again out of boredom