The National Museum has a collection of iron coupons, which were given to Yue in 896 AD for crusade. Iron coupons are cast in iron, shaped like tiles, with 350 gold characters embedded on them. Among them, there is the content of "Qing forgives nine deaths, and three children and grandchildren die". Who can hold Fang Shangjian? Of course, he is a respected official trusted by the emperor. Holding the sword in your hand means that you have almost the same judicial power as the emperor, and you can take action against the criminal officer before he acts, even if the other party ranks among the three public officials. Death gold medal is a kind of amulet. Officials who win death gold medals are usually great heroes. In order to thank them for their contribution to the country, the emperor gave them a gold medal to avoid death, which can save their lives when they commit capital crimes (except treason) in the future. It can be seen that the sword on the side is used to take people's lives, while the gold medal to avoid death is used to save themselves. Then, when an imperial envoy with a royal sword was ready to use the power of action to kill people before the action, he found that the other party was actually holding a gold medal to avoid death. What should he do in this case? In other words, when the sword on Fang meets the gold medal to avoid death, who is stronger? Who obeys who? This imperial sword and the gold medal for avoiding death are one that can slay criminal officials at any level, and the other that has criminal immunity and can escape any responsibility except treason. The two functions are opposite, but the power is equal. It seems that they can contain each other, but they cannot suppress each other. Most of us know the sword on the side and the gold medal to avoid death from novels, plays and film and television works. However, we have never seen the two at the same time. In the above-mentioned works, as long as there is a good sword, there is often no gold medal for avoiding death. As long as the gold medal from death comes on the stage, the sword on the side must be hidden in the horizon, and the two will never touch it. These two precious things can only be given by the emperor himself, and the quantity is very small. How can the emperor "cover the child's shield with the child's spear"?