"Water can carry a boat, but it can also overturn it" is Wei Zhi's original words. Emperor Taizong and Li Shimin often warned future generations, which became Li Shimin's famous saying for a long time. The meaning of this sentence is straightforward, that is, regard a regime as a "ship" and the people as "water". The meaning of "water can carry a boat, but it can also overturn it" is roughly equivalent to "those who win the hearts of the people win the world, and those who lose the hearts of the people lose the world." Li Shimin, Emperor Taizong, once said: "With copper as a mirror, you can be well dressed; Taking history as a mirror, we can know the rise and fall, and taking people as a mirror, we can know the gains and losses. " You don't have to look back through this mirror. According to your usual work, take fewer detours, make fewer mistakes and do nothing wrong. Everything should be like a mirror. So, how to do it?