Taizong said to Liang Gong: "If you use copper as a mirror, you can straighten your clothes; if you use ancient times as a mirror, you can know the ups and downs; if you use people as a mirror, you can know gains and losses. I have tried these three mirrors to protect myself." Passed. Today Wei Zheng passed away, so he died in a mirror."

What Emperor Taizong of the Tang Dynasty said about Wei Zheng

Minister Wei Zheng was able to express his opinions directly to the court. It is said that because Emperor Taizong of the Tang Dynasty was able to listen to correct opinions, during his reign, the politics were clear and the society was stable. The Tang Dynasty experienced economic prosperity and strong national power. After Wei Zheng died of illness, Emperor Taizong of the Tang Dynasty burst into tears and was very sad. He ordered a monument to be erected for Wei Zheng and wrote the inscription himself. Taizong often missed Wei Zheng, and sighed to his officials: "If you use copper as a mirror, you can straighten your clothes; if you use people as a mirror, you can know gains and losses; if you use history as a mirror, you can know the ups and downs." He compared Wei Zheng to a mirror.

It means that you can find people’s clothes and hats with a bronze mirror (bronze mirrors were used in ancient times), which means that you can see a person’s external image;

Taking people as a Learning can help us understand gains and losses, which means that we can know how to do everything, what we gain, and what we should lose by using people's experiences as a reference; The rise and fall