I can solve this problem

After listening to situ Yuanzhi's explanation, Tang Zhen finally understood heaven battling city's current situation.

There was no doubt that heaven battling city was currently in a very dangerous period. It could be said that the internal and external troubles had not been resolved yet, and if they were not careful, the destruction of a top-notch Tower City would only be an instant.

The top-notch towers of the foreign races around heaven battling city had always been eyeing heaven battling city covetously because of their interests. They must have known what had happened to heaven battling city when it invaded the other world, so they had joined forces to constantly harass heaven battling city.

As a result, while heaven battling city was stuck in the quagmire of promotion missions, it also had to spend a lot of energy to deal with the hostile Wars of the foreign races.