Saint-grade Heavenly Treasures were a very miraculous existence. Even if they were destroyed, they could reform by relying on the power of the Heavenly Laws. It just took a long time, and the rarer the Saint-grade Heavenly Treasure, the longer it took to reform.
The two Saint-grade Heavenly Treasures currently held by the Demon Slayer Alliance were extremely rare. As far as they knew, there were only two in the entire world. They were only slightly less precious than the Creation Divine Tree and the World-Ending Thunder Dragon. So, after being destroyed, it would take them a very long time to reform. It was likely they wouldn't reform for several million years at the earliest.
Several million years was far too long for Ling Tian and the others. Even though they knew the Lord of the Universe would probably keep Hua Min'er and the others safe, just as he had promised, they still felt that way. After all, they knew that the longer things dragged on, the more likely an accident would occur—something Ling Tian and the others did not want to see.
That was exactly why Chi Xue and the others had been so worried when they learned that the Demon Slayer Alliance had threatened to destroy those two Saint-grade Heavenly Treasures.
After calming down, however, Ling Tian didn't believe the Demon Slayer Alliance cultivators would destroy the two treasures. In particular, they didn't know that Ling Tian and the others were in such a hurry to find every Saint-grade Heavenly Treasure. They knew that destroyed Saint-grade Heavenly Treasures could reform; this was common knowledge among Outer Realm Cultivators. But since the Demon Slayer Alliance didn't know how urgently Ling Tian and the others sought them, its members wouldn't willingly suffer such a huge loss by destroying those two