C255 Internal and External Difficulties

Qin Hao took some time to take a look at the defense value. After the last round of cannon fire, the defense value had been reduced by 100,000 points!

With the most ideal firing condition, the energy cannon needed at least two minutes to charge up and launch.

That was to say, even if the other side pulled over 10,000 energy cannon, if they wanted to use up 170 million defense value