Taiping Yulan
The Taiping Yulan, translated as the Imperial Reader or Readings of the Taiping Era, is a massive Chinese "leishu" encyclopedia compiled by a number of officers under Li Fang from 977 to 983. It was commissioned by the imperial court of the Song dynasty during the first era of the reign of Emperor Taizong. It is divided into 1,000 volumes and 55 sections, which consisted of about 4.7 million Chinese characters. It included citations from about 2,579 different kinds of documents spanning from books, poetry, odes, proverbs, steles to miscellaneous works. After its completion, the Emperor Taizong is  said to have finished reading it within a year, going through 3 volumes per day. It is considered one of the "Four Great Books of Song". It is one of the sources used by Ming and Qing scholars to reconstruct the lost "Record of the Seasons of Jingchu".