Ling Tian had originally thought the Lord of the Universe would attack him the moment he entered the Demon God Forbidden Ground. Then he could use the Teleportation Secret Technique and other means to slip easily out of the forbidden ground. Once he had shown his strength, he would have the leverage to negotiate—especially since the Lord of the Universe had failed to capture him.
Since the Lord of the Universe had been unable to capture Ling Tian in the outside world, he naturally wanted to "trick" him into his own universe. That was exactly what Ling Tian wanted to see, since only then would he have a chance to meet his friends and family and bring them all into his Small World.
Unexpectedly, the Lord of the Universe had not attacked Ling Tian. He even answered whatever the latter asked. After analyzing the situation, Chang Xiangsi and the others believed he was testing Ling Tian's cards so he could negotiate more effectively later.
Once they realized this, Xuanhuang and the other Artifact Spirits grew deeply worried. They knew the Lord of the Universe understood just how important Hua Min'er and the others were to Ling Tian. If he used them as leverage, Ling Tian would most likely have no choice but to submit. At the very least, he would be put at a severe disadvantage.
Chang Xiangsi, however, was not convinced. Ling Tian still had some bargaining chips: he possessed every kind of Saint-grade Heavenly Treasure, and his aptitude, Bloodline Power, and strength were the greatest in the current star domain. This meant that if the Lord of the Universe wanted the Saint-grade Heavenly Treasures and wanted to possess Ling Tian, he would have to negotiate. After all, it would be difficult to find a better target for possession