The apocalyptic world is very popular in heavy industry and mechanical technology. When the two are merged together, a set of technology tree system is gradually derived.
The so-called technology tree refers to the development of different technological directions by choosing to lead to different research and development results.
This magic crystal cannon is one of the results of research and development in the technology tree.
Being able to develop products that are listed in the science and technology tree, in the doomsday world, will immediately become famous and receive extremely high honors.
Armed forces have always been at the top of the technology tree, and countless geniuses can't shake its status.
The research and development product of Magic Crystal Cannon can be listed in t
