But after the drone completed its upgrade, the entire drone system became invincible within the solar system, and all problems were no longer issues. With the drone's immense strength, Yan Fei could easily crush all armed forces on Earth, reversing the situation was a matter of moments. The only thing he needed to consider was how to achieve this grand reversal and avoid the fearsome natural power of the super tsunami.
The drone carrier is now located on the Spirit Divine Star in the Asteroid Belt, a full 370 million kilometers away from Earth. Even if it rushed back at its maximum speed of 10,000 kilometers/second, it would take ten hours and twenty minutes to reach Earth. This speed was multiple times faster than the speed at which Yan Fei previously traveled to the Spirit Divine Star by spaceship, but even so, it couldn't make it in time for the impending World War on Earth, nor the subsequent super tsunami attack, because time was running short.
