They are the Jiuding made by Xia Yu, the founding jade seal of the Qin Dynasty, and the authentic calligraphy of Wang Xizhi's preface to the Lanting Collection. The first is the Jiuding made by Xia Yu, which was built at the beginning of the Xia Dynasty. Dayu received Zen from Shun. After taking office, in order to express his joy for the unification of the world and to demonstrate his imperial majesty as the leader of the world, Yu ordered all tribes to present a map of Kyushu and engraved it on a bronze tripod.
This is the origin of "Jiuding" in Chinese history. Jiuding represents Jiuzhou and symbolizes land. "One word and nine tripods" also symbolizes weight. Whoever possesses the Jiuding can claim the title of emperor. The Jiuding symbolizes supreme power. It is a pity that Jiuding was passed down for only three generations before it fell into the hands of the Zhou royal family. Due to special reasons, it sank in the sea without a trace.
The second is the founding jade seal of the Qin Dynasty, which was made by Li Si, the prime minister of the Qin Dynasty, with He's jade. On both sides, there are engraved the characters "Ordered by heaven, you will live forever". As a jade seal created by the unified dynasty, this traditional jade seal later became something that rulers of various forces snatched. Unfortunately, there are folk rumors that during the Five Dynasties period, when a subjugated king committed suicide, he jumped from a building with a jade seal handed down from his country in his arms, and disappeared without a trace.
The last is the authentic preface to the Lanting Collection, which is known as the pinnacle of calligraphy and the best running script in the world. It was written by Wang Xizhi in the Jin Dynasty. Li Shimin, Emperor Taizong of the Tang Dynasty, loved the calligraphy of Wang Xizhi, the sage of calligraphy. Later, Li Shimin learned that the original "Preface to the Lanting Anthology" was in the hands of the monk Biancai. After several setbacks, Li Shimin obtained the coveted "Preface to the Lanting Anthology". Li Shimin cherished Wang Xizhi's authentic works very much, so when he finally died, he used them as a burial object. However, according to records, after Li Shimin's tomb was stolen, the "Preface to the Lanting Collection" was not among the funerary objects. Therefore, whether due to accidents or man-made actions, these national treasures have disappeared, hoping that one day they will see the light of day again.