In 1975, Yang Dongfeng, a farmer in Shanmen Commune in the southern suburbs of Xi'an, Shaanxi Province, was leveling his land when he accidentally found a small copper block. At first, he thought it was scrap copper, so he took it to the scrap recycling station to sell it, but because it was too light to sell at a high price, he stayed at home.
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As he continued to play with it, the dirt and patina on the small copper block were worn away, revealing golden text. Yang Dongfeng vaguely felt that this might be a historical artifact. So, he came to the Shaanxi History Museum with the copper block and met Dai Yingxin, an archaeological expert. After Dai Yingxin's careful research, it was confirmed that this was actually an ancient military talisman with a long history and extremely valuable research value - Du Hu Fu.
Shaanxi History Museum
In the end, the Shaanxi History Museum issued a letter of commendation for Yang Dongfeng and attached a bonus of 50 yuan, so far, this Du Hu Fu has become an incomparably precious national treasure in the 1.7 million cultural relics of the Shaanxi History Museum.
The Duhu talisman is tiger-shaped, there is a groove on the back, there is a small hole on the neck, there are 9 lines of 40 characters on the wrong gold inscription, and the font is a small seal: "The symbol of the armor." The right is the king, the left is the du. Whoever is armored, with more than 50 soldiers, will know the king's charm, but dare to do it. The burning thing, although the mother will be charming, will die. ”
This inscription not only fully demonstrates the military system of the Qin State during the Warring States Period, and is the longest inscription among all the unearthed tiger talismans, but also reflects the superb level of ancient Chinese gold craftsmanship. The Duhu Fu is divided into two halves, the right half is in the hands of the king, and the left half is in the hands of the military governor of Ducheng.
Du Hu Fu
The Duhu talisman with a length of only 9.5 centimeters can affect the battlefield, and Liu Shengli, a professor of cryptography at Shanghai Jiao Tong University, unveils the mystery for us one by one.
From a professional point of view, cryptography is divided into two areas: one is certification and the other is secrecy. Cryptography is widely present in our work and life, and the U shield of online bank transfer, gesture password, fingerprint authentication, iris authentication, face authentication, password lock on the suitcase, safe in the bank and document encryption are all confidential functions.
Du Hu Fu
The word "conform" that we commonly use today is derived from the tiger talisman - when two tiger talismans are paired together, a key is a lock. The process of certification is all about comparison. Of course, there are more than just tiger charms. Tang Gaozu Li Yuan changed the tiger talisman to a fish talisman, which was originally a tool for transferring troops, and later became a kind of ID card for officials. Each half of the fish symbol has only half of the words, and the word "contract" is engraved in the middle seam, which is the same as when we sign the contract now, we will stamp it in the middle seam, and each party will keep a copy. This contract is the contract, and it is the origin of our contract today.