The first time the imperial seal was lost was during Qin Shihuang's eastern tour. It is said that when he passed Dongting Lake, suddenly the wind and waves were very strong and the boat was about to capsize. In a hurry, he threw the jade seal into the lake. Suddenly, the lake was calm. But strangely, a few years later, someone presented a decree, and the history book said: the decree of the country belongs to Qin.

This is obviously unreasonable. Dongting Lake, called "Eight Hundred Li Dongting" in ancient times, is not only large in area, but also deep in water. Under the condition of underdeveloped ancient science and technology, it is impossible to find the jade seal. If what is said in the history books is true, it must be that the first emperor tried to hide his eyes and ears. After all, the name of making the jade seal is "God's will". If the decree has not been found, it will inevitably shake its rule. So it is very likely that the decree will remain at the bottom of Dongting Lake. As for the decree circulated by later generations, it should be a substitute used by the first emperor to hide people's eyes and ears.

The historical value of national laws and regulations;

As an important cultural relic in ancient China, the national seal has extremely high historical value. It not only witnessed the evolution and historical changes of ancient political system in China, but also embodied the unique charm of ancient jade culture in China. In the history of China, the imperial seal has been transferred and circulated many times, and each inheritance means a kind of historical inheritance and cultural continuity.

During the Qing Dynasty, the country's imperial seal was brought to Beijing by Emperor Qianlong of Qing Dynasty and became one of the imperial seals of Qing Dynasty. After the outbreak of the Revolution of 1911, the national seal became the national treasure of China and was regarded as one of the symbols of the Chinese nation. 1949, after the founding of People's Republic of China (PRC), the official seal of People's Republic of China (PRC) became the national seal of People's Republic of China (PRC), and it continued to be preserved in the National Museum of China, becoming one of the important representatives of China's history and culture.