Chinese pilgrim who visited India during Harsha Vardhan's period was
Chinese pilgrim who visited India during Harsha Vardhan's period was Correct Answer Hiuen Tsang
The period of Harsha is well documented in Harshacharitra written by Banabhatta. The writings of Chinese scholar Hiuen-Tsang who visited Harsha's court also provide the great detail about Harsha and India of Harsha's time.