This is not the Datang I am familiar with

Traveling through the Tang Dynasty, Chen Fang panicked. He actually slept on Wu Meiniang's bed. What should he do next?Waiting online, very urgent!
In a car accident, Chen Fang traveled to the early years of the Tang Dynasty, only to find that the Tang Dynasty was different from what he remembered.There is a Western Qin Dynasty in the northwest of the Tang Dynasty, and a Northern Han Dynasty in the north.Glass and soap have become luxuries sought after by the upper echelons of society, and toilets can be flushed with toilet paper.
It turns out that there were several timetravelers in history, and history has changed. Chen Fang must learn to adapt to this era, live on, live well, and live better.