Lord of the Han Dynasty

A young man traveled through time to the end of the Han Dynasty and possessed the body of Zhang Rang's stepson, Zhang Ji, who was the head of the ten permanent servants. This was originally a soul piercing, but the strange thing is that he actually brought a solar-charged mobile phone. How to explain this. What's even more bizarre is that every time lightning breaks through the sky, the phone can actually connect to the Internet for a short period of time. How to explain this? In fact, a strong life requires no explanation at all. This book is just for fun, please don't take it too seriously.