The people from the other worlds were hesitant about Zhao Hai's request. They only wanted to form an alliance with Zhao Hai. If they were allies, they would be able to express their opinions when dealing with the world of war gods. They would have a certain amount of authority, and this authority would prevent the people from their worlds from becoming cannon fodder.
It was only natural for the people of these worlds to do so. Even they were afraid of the world of war gods. After the World of war gods took control of those worlds, it was not as simple as collecting taxes and making other worlds pay tributes. Worlds like the feather bow world and the hairy ear world were even simpler. Because their combat power was not strong, the world of war gods did not take a fancy to them. On the other hand, people from other worlds had to serve in the military.