According to Records of the Historian, Xunzi was a famous philosopher in China during the Warring States Period, and his thoughts had a far-reaching impact on the development of ancient philosophy in China. He once said: "Water carries a boat, and water capsizes it", which means that water can carry a boat or drown it. The meaning of this sentence is that everything has two sides, both good and bad. Just like water, it can help ships move forward, but if you don't pay attention, it will also cause disasters to ships. This sentence can also be used to describe the relationship between monarch and minister. Kings are like ships, and people are like water. Water can make a ship run or drown it.