If he could, he hoped to exist as discreetly as possible within the Imperial Sword Alliance, because perhaps in the entire Xiehe, he might never find another place that suits his heart as well.
Yet, despite his reluctance, he must depart.
Initially, he merely wanted to accumulate Spiritual Energy and wait until he forged a spiritual body to achieve the rank of a grandmaster. Right now, he's gathered enough Spiritual Energy to ascend to the other shore.
Therefore, he can no longer stay in Tian Nan and must return to Yuanzhou to go into seclusion.
This is also the reason he has to meet Zhen Ping'er, because the Imperial Sword Alliance is no longer a trivial affair, but an organization with followers numbering tens of thousands and thousands of swordsmen.
While he was in Tian Nan, he could help Zhen Ping'er maintain a steady direction, but with his departure, he is very afraid this operation could spiral out of control, turning him into Tian Nan's sinner.