Which version of Chen Shiduo's medical encyclopedia is good?

Second edition. Chen Shiduo's Encyclopedia of Medicine mainly contains the medical theory and practice achievements of Qing Dynasty, especially its influence on gynecology of traditional Chinese medicine. On the basis of 1 version, the second edition adds some new medical theoretical knowledge and methods, which is more comprehensive and more suitable for the health needs of today's times, and is a better version. The basic meaning of "book" is cost works, such as books and periodicals, and the extended meaning is letter, such as letters and letters.