Everything that had just happened had been an act!
When Fan Lang first met Gu Kehan, Gu Kehan had secretly communicated with him and whispered a few words. The content was simple: Gu Kehan was willing to help Fan Lang fight Fan Sha, but only in secret or by stepping forward at a critical moment. It absolutely could not be made public, lest disaster befall the Ancient Clan.
If the Ancient Clan openly declared its support for Fan Lang and word reached Fan Sha, there was an eighty-percent chance he would come looking to make trouble for them. The Ancient Clan was unwilling to bear such consequences.
So the two sides agreed to put on an act, creating the illusion that they had fallen out. It was all for Fan Sha to see.
Fan Sha knew what was happening within the Ancient Clan and must have informants planted there. They had no choice but to be cautious.
As for why Gu Kehan had agreed to help, there were mainly two reasons.
Half of it was because Fan Lang had cured his poison and saved his life. The other half was because Fan Lang had fulfilled the Ancient Clan's prophecy. Within the Ancient Clan, quite a few people believed in that prophecy.
Poor Gu Shutai had been fooled by the false appearance. He thought Fan Lang had truly turned against the Ancient Clan and had been gloating and laughing uproariously.
In truth, he was the laughable one.
Fan Lang's demands of the Ancient Clan were simple. As long as they could lend a hand at a crucial moment, that would be enough. He did not need the Ancient Clan to wage an all-out war against the Holy Light Continent. That would be asking too much and was unrealistic.
Fan Lang moved