The previous chapters, to be honest, were a bit tiring to write.

Because of the previous technology tree, there are finally rules to follow, and there are realistic materials for reference; But the later development of the technology tree is really nerve-wracking. Here, I would also like to thank the readers for their collective efforts.

In addition, QQ group: 125828479

Welcome everyone to participate in the brain hole competition, O(∩_∩)O haha~

Here's the main point, pay attention......

In this volume, Tianya will try to depict a more expansive and bizarre world. (To be continued......)