C2747 Angels

"Global defense? This is truly difficult, to the point where I don't even dare to imagine it! " Chen Qingyang said.

Xuan Zhenghao said, "They can also break down and enter Earth separately. Therefore, it's impossible to set up a part of the defenses, it has to be a complete omnidirectional defense. "

Chen Qingyang said, "Can this be done?"

Xuan Zhenghao said, "Although it is difficult