This sort of thing was very easy to get people on board with.
If it had merely been about advancing, they would still have hesitated over whether to do it!
But now, although they wanted to advance, on second thought—WTF, the powerful experts outside were watching everything. Even if they advanced, if they did so like this, who would think highly of them? Thinking of that, why not cooperate?
Moreover, everyone was a top-tier genius. At the very least, most of them were in the God Monarch Realm, and there were even quite a few in the God Realm. If over twenty groups joined forces, why should they fear those three groups?
Who among them did not possess a few top-grade spiritual artifacts?
Thus, in order to salvage their image in the eyes of the powerful experts outside who were watching them, every one of them earnestly went to discuss this with the other groups.
Meanwhile, those three groups had no idea that the other twenty-plus groups were secretly making such moves. They had never expected these people to have such nerve!
Ultimately, the most important reason was that they knew the powerful experts outside were watching them. In order not to lose face, for the sake of their dignity, they had to do this. Instead, it gave them an opportunity to regain their pride!
Even if some people did not want to do it and wanted to curry favor with those three groups—or with Ye Ming of the Evil God Hall and Jian Sanchi of the Holy Sword Hall—they realized that if they did, the people outside would see their true colors. So that was absolutely out of the question!
Therefore, Ye Tianyi had originally been prepared to go all in, but after overhearing Liu Zhinan as he passed