After analyzing the situation, everyone realized how important it was to unleash Space Shatter at full power. Doing so would not only eliminate a large number of Nine Nether Nether Soldiers, but might also take out some Demon Soldiers. That would greatly ease Chi Xue and the others' pressure, giving them a chance to preserve more formations. With those formations, they could then recover to peak condition.
Moreover, Chi Xue and the others were eager for the Lord of the Universe to believe they had already been greatly depleted and seize the chance to attack. That way, they could use their many formations to battle the Lord of the Universe and wear him down further. Most importantly, this would draw much of his attention, leaving Ling Tian with far less pressure when he made his move. In Chi Xue and the others' view, this gave them the best chance of defeating the Lord of the Universe.
Of course, if they had a choice, Chi Xue and the others would rather not fight the final battle against the Lord of the Universe so soon. They still hoped to buy more time, because the longer they waited, the stronger Ling Tian would become. Hua Min'er and the others would also be more qualified to join Ling Tian in the battle against the Lord of the Universe. That would undoubtedly give Ling Tian a better chance of resisting the Lord of the Universe's universal suppression, and then a better chance of defeating him.
After considering all this, everyone finally made their decision. From then on, they each rubbed their hands together, ready to unleash Space Shatter at full power at a moment's notice.
The reason they did not use it immediately was that the Demon Soldiers were still a long way off. Even