Wang Shaoheng’s soul transmigrates into the Tang Dynasty:
The good news is that he has read the history of the Tang Dynasty thoroughly and knows all about its people and customs.
The bad news is that the histories he read were all disreputable gossip, and the customs he knows mostly involve pretty women.
For example, Emperor Gaozu Li Yuan and his two imperial sisters-in-law use that long thing to toast one another; Princess Gaoyang and the monk Bianji toss that embroidered pillow back and forth; Princess Taiping and her mother, Empress Wu, both employ the talented Zhang Zong; and Yang Yuhuan and her son use colorful silks to weave a matching pair of mandarin-duck bellybands…
Oh dear, what is he supposed to do?