Cao participated in Liu Bang, Xiao He and other two people met at the end of Qin Dynasty, and fought side by side with Liu Bang in Pei County for many years, with outstanding achievements. After Liu Bang destroyed Xiang Yu, he called himself Emperor Gaozu, and all the courtiers rewarded him for his work. Because he has so many talents, he can't tell who is the primary hero. In Liu Bang's mind, Xiao He was the greatest hero and Cao Can was the second, so he named Xiao He as the prime minister. However, Cao Can was unconvinced and thought he was the main hero.
After Xiao He became prime minister, he made great efforts and formulated a series of complete laws. A few years later, Xiao He was too old to be a prime minister. This is Liu Bangwen and Xiao He. Who do you think has the ability to be prime minister? Xiao He said, in fact, you have someone in mind, and this person is the most capable. Not long after, Xiao He died at home.
After hearing the news of Xiao He's death at home, Cao Can said to the servant at home, I'm ready. I want to be the prime minister of my old job, but the servants don't believe me. As a result, the emperor really ordered Cao Can to be prime minister in two days. After Cao Can took office, all laws were implemented in accordance with the laws formulated by Xiao He, and there was no change. However, he drank and enjoyed himself all day, and his subordinate officials drank and enjoyed themselves with him when they were free.
Once again, the emperor ordered the prince to inspect the bureaucracy, and found that the officials were drinking together in the kitchen, so that Cao could dissuade them first. Unexpectedly, Cao Can also drank with them. Later, Cao Can explained to the emperor that everyone had just stepped out of the harsh criminal law of the Qin Dynasty, which was a good time to recuperate. This mentality of doing nothing makes the people love it.