Neijing zhiyao, in two volumes, compiled by Li Zhong-zi of the Ming dynasty, was carefully proof-read by Xue Sheng-bai of the Qing dynasty. Among the hundred or so annotated editions of Neijing Suwen and Lingshu that appeared in different formats and styles in previous generations, only Neijing zhiyao compiled by Mr. Li Nian-er of the Ming dynasty is the most succinct but pithy.