Aside from needing an appropriate reason, Zhou Tian must also adopt an unyielding attitude, unwilling to open the Treasure Space under any circumstances. After withstanding immense pressure, Zhou Tian could then opt to negotiate the conditions under which he would open his Treasure Space in the future.
At the same time, even if it came to that point, Zhou Tian would still need to make other arrangements to avoid arousing suspicion. For instance, even if he opens his space, there should still be a fee charged for entering. If he doesn't want too many Deities entering, Zhou Tian must control the number of Deities allowed entry each time. It's believed that only by showcasing the difficulty of entering the Treasure Space under Zhou Tian's control will the majority of Deities be less suspicious.
As for completely eliminating those factions' suspicions, it could be said to be both easy and extremely challenging.
