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The Imperial Seal of China, or the Heirloom Seal of the Realm (Traditional Chinese: 傳國璽; Simplified Chinese: 传国玺) is a Chinese jade seal carved out of the He Shi Bi, a historically famous piece of jade.

Contents 1 Creation 2 Propagation 3 Loss 4 Recent developments 5 See also

In 221 BC, the Seal was created when Qin Shihuang destroyed the remaining Warring States and united China under the Qin Dynasty. The He Shi Bi was a famous piece of jade stone which previously belonged to the Zhao state. Passing into the hands of the new Emperor of China, he ordered it made into his Imperial seal. The words “受命于天， 既寿永昌”(roughly translated as "The Mandate is received from Heaven, May He have Longevity and Prosperity") were written by Prime Minister Li Si, and carved onto the seal by Sun Shou.

At the death of the second Emperor of Qin, his successor Ziying profferred the seal to the new emperor of the Han Dynasty, whereafter it was known as the "Han Heirloom Seal of the Realm". At the end of the Western Han Dynasty in AD 9, Wang Mang, the new ruler, forced the Han empress dowager to hand over the Seal. The empress dowager, in anger, threw the Seal on the ground, chipping one corner. Later Wang Mang ordered the corner to be restored with gold.

This seal passed on even as dynasties rose and fell. It was seen as a legitimising device, signalling the Mandate of Heaven. During turbulent periods, such as the Three Kingdoms period, the seal became the object of rivalry and armed conflict. Regimes which possessed the seal declared themselves, and are often regarded historically, as legitimate. At the end of the restored Han Dynasty in the 3rd Century AD, Sun Jian found the Imperial Seal on the body of a court servant who had committed suicide by diving into a well. His son Sun Ce gave the Seal to Yuan Shu in return for 3000 soldiers, which he used to found the Kingdom of Wu. When Yuan Shu was defeated, the Seal came into the hands of Cao Cao, whose son Cao Pi proclaimed the Wei Dynasty as the legitimate successor state to Han and the other rival dynasties Shu-Han and Wu to be illegitimate.

The Seal was passed through the Wei Dynasty, Jin Dynasty, Sixteen Kingdoms period, Sui Dynasty and Tang Dynasty, but was lost to history in the Five Dynasties and Ten Kingdoms Period.

Three theories exist as to how it was lost:

1. At the end of the Tang Dynasty, when the last Emperor died by self-immolation.
2. In AD 946 when the Emperor Taizu of Liao captured the last Emperor of the Jin state.
3. The Seal came into the hands of the Yuan emperors. When the Ming armies captured the Yuan capital in 1369, it captured just one out of the eleven personal Seals of the Yuan emperors. The Heirloom Seal was not found. In 1370, Ming armies invaded Mongolia and captured some treasures brought there by the retreating Yuan emperor. However, the Heirloom Seal was again not among these.

In any case, the Seal was known to be lost by the beginning of the Ming Dynasty. Both the Ming and the Qing dynasties did not have the Heirloom Seal. This partly explains the Qing Emperors' obsession with creating numerous imperial seals, in order to reduce the significance of the Heirloom Seal.

Since the Qing Dynasty, several seals have been claimed to be the lost Heirloom Seal. One of these was even stored in the Forbidden City alongside other imperial seals prior to the Qianlong era. However, none of these claims have been confirmed by experts. The one held by the Qing imperial palace was found to be made of earth, not jade. In at least one modern case, the seal concerned was found to be a personal seal of an Emperor, rather than the Heirloom Imperial Seal.

• Seal (Chinese)
• Seal script