More than 2,000 scholars worked on the encyclopedia between 1404 and 1408, in accordance with a pr release from Beaussant Lefèvre, the Paris-based auction house that made the sale.
The Yongle Dadian may be the largest encyclopedia in the world, and originally contained 22,877 chapters.
In 1562, the Jiajing Emperor, the 11th Ming ruler, ordered two copies of the encyclopedia to be made, however the original was lost as a result of many wars, thefts and fires that occurred underneath the Ming Dynasty (1368-1644), the auction house said.
While the 2 volumes sold Tuesday are copies, they truly are extremely rare, with only 400 known volumes, or 4% of the original encyclopedia, left available, according to Beaussant Lefèvre.
The books, which measure 20 inches by 12 inches, were written in red and black ink on paper. While printing practices had been developed at enough time, the encyclopedia was published by hand because length.
One volume is about the lakes of China and the other informs readers about funeral rites. Together, they certainly were bought by an unnamed buyer for €8.128 million including fees. Before the auction, they carried a price estimate of €5,000-€8,000.
The British Library has 24 volumes of the encyclopedia, equivalent to 49 chapters.
The Yongle Emperor was a strong leader who presided over the most effective years of the Ming Dynasty.
In 1412, he ordered the construction of the famous Porcelain Tower in Nanjing.
The tower took 17 years to accomplish and was known as one of many Seven Wonders of the Medieval World.
It was designed with glazed, white porcelain bricks and rose more than 250 feet from an octagonal foundation, but the original was considered to have been destroyed during the Taiping Rebellion in the 19th century.
However, a fresh version of the tower has been constructed carrying out a 1 billion yuan (about $150 million) donation from Chinese billionaire Wang Jianlin in 2010.