Traveling through the Great Tang, Chen Fang found that this Great Tang was very strange to him. There was a great Han in the north of the Great Tang, and there was a Great Qin in the west of the Great Tang. Glass soap has become popular in the upper class, and the toilets in the palace can be flushed. There is toilet paper next to it, who can tell me why it is not toilet paper. Of course, this is not important, the important thing is to live and live well.