Hiuen Tsang (Xuanzang), the Chinese Buddhist pilgrim and scholar, visited India during the reign of Harsha Vardhan (Harshachandra) of Kannauj (606-647 A.D.). He spent several years in India, traveling extensively and documenting the political, social, and religious conditions of the time. Chandra Gupta Vikramaditya ruled earlier (Gupta period), while Rajya Vardhan was Harsha's brother.