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French Historian Sylvan discovered a Chinese version of Tripitak, where she found that Charak was an Ayurved specialist of Kaniska Dynasty. According to Puran, Bhagwan Visnu's Matsavtar found 5 Vedas, the last one is Ayurved and was possessed by Anantadev. He came to Martyadham and took birth in a house of a monk. As he came down to earth as a spy with all 5 vedas in his hand, he was known a Charak in Martya. Another belief is Charak took birth in 175 B. C. Some say, there was no man on earth ever named as Charak. Old medical science was written by various ancient pandits and they were collectively called as Charak Sanhita, thus, came the name of Charak.