It's just that everyone feels that this war will last for a long time.
War is not about fighting to the end. For example, some Nascent Soul realm monks are fully fired in the front, and when their physical strength is exhausted or they are seriously injured, which affects their performance on the battlefield, they will withdraw as soon as possible, including Jindan realm monks. is also like this.
It is impossible for anyone to hold on all the time. If someone withdraws, almost the next second, people behind will rush in like a tide.