The old ancestor of the Heng Yun Sect, Wang Heng, was just a stranger to Ning Fan. He already returned the favor by helping him clear his trauma. It was, of course, impossible to give him any other benefits.
To Ning Fan, that favor just now was pretty insignificant.
However, that insignificant amount of void power from Ning Fan was of great significance as it helped Wang Heng open up the path towards the Late Gold Core Realm!
