Travel Through the Tang Dynasty, Fuse Nanorobots and Become a God

The protagonist travels through the Tang Dynasty, integrates nano-robots into his body, discovers the usefulness of nano-machines, and transforms the Tang Dynasty into a mythical world. I have read a lot of novels, and as a senior book fan, I have been thinking about a question, which is how our real world is different from the myths and cultivation in the book. In the end, I feel that there is a little "aura". As long as aura can be created, our world can be practiced like in the book. A new creation, I hope you can support me and give me some advice, thank you.