Emperor Taishang was the father of the emperor, but we know that in the ethical system of the ancients, there was not only the father and son, but also the monarch. Logically, the emperor is the honor of the world, the king of the world, and his father should also be his courtier.
Historically, one Taishang Emperor was the father of Qin Shi Huang, that is, that Zi Chu, King Xiang of Qinzhuang. Qin Shi Huang created the title of emperor and created the first dynasty in Chinese history, at this time he enshrined his dead father as the Taishang Emperor of the Qin Dynasty, so Zichu was the first authentic Taishang Emperor in Chinese history. Before Zi Chu, there was also a monarch who abdicated early and gave zen to his son, he was the overlord Zhao Wuling King of Hufu Riding and Shooting, but at that time there was no emperor's saying, he retired and called himself "Lord Father", his son later elevated him, and created the "Dune Palace Change", starving the generation of overlord King Zhao Wuling to death. As we said earlier, he is the "Lord Father", the "King of Taishang", not the Emperor of Taishang.
The second Emperor Taishang in history was Liu Bang's father, Liu Yu, of course, Liu Yu's name is still very doubtful, we will call it here. Liu Yu was the second Emperor Taishang, and also the first person to be crowned Emperor Taishang when he was alive, and he was not the same as King Zhuang Xiang, who had already died to become Emperor Taishang.
People at the time had no experience – how could it be other than the relationship between the emperor and his living father? Is the emperor big, or is the emperor his father big? This has to be figured out. At the beginning, whether it was Liu Bang or Liu Yu, they both felt that being the father was the biggest, the emperor could not play the set of kings and subjects in front of his father, and he should use the etiquette of father and son. Therefore, during that time, Liu Bang would go to see his father every five days.
Liu Taigong's housekeeper was a clever man, he quickly became aware of the problem here, and one day he went to tell Liu Taigong: You see how many suns there are in the sky, there is only one, this is the only two heavens, the earth is the same, although you are his father, but also his subjects, how can you let the jun go to see the courtiers? Liu Yu felt very reasonable when he heard it, his third son was no longer the idle little rogue he had been, but the emperor and tianzi of the Great Han.
Therefore, the next time Liu Bang came to see Liu Xuan, Liu Yu had already greeted him with a broom outside the door, of course, this was a kind of etiquette in ancient times, representing the meaning of dust removal and purification, Liu Bang came to see it, he was shocked, he was naturally very happy, on the one hand, his father could really understand, and there was such a housekeeper who said his heart, so Liu Bang rewarded the butler, and soon after Liu Bang crowned his father as emperor, he still often went to see him.