The reason long Tianlin had brought up this matter as soon as he had met Zhao Hai was actually to test him. He wanted to join the bewitching City State, so he wanted to know how Zhao Hai would deal with the city Lords who had joined. If Zhao Hai wanted to settle the score later, then there was no point in joining him. If he joined, he could just give up his power and become a rich man. This way, he could protect his family.
However, after long Tianlin had spoken to Zhao Hai, the latter had given him an answer that seemed ridiculous. At the very least, long Tianlin had thought that it was ridiculous at first. A rich man like him was bent on giving up his power. Who would believe that? at the very least, he couldn't do that.