Option b is the correct answer. Chinese writers mention India by the name of Yin-tu, which is derived from the Sanskrit word Sindhu, meaning river. The Chinese called India Yin-tu because they first learned about India from the people living near the Indus River, which was called Sindhu in ancient India. The Chinese also used other names for India, such as Tianzhu, meaning heavenly land, and Shendu, meaning divine land. Some of the famous Chinese writers who mention India by the name of Yin-tu are Sima Qian, Ban Gu, Fan Ye, and Faxian. Important Tips Fa Hien's book name was Fo-Kwo-Ki which literally meant A Record of Buddhistic Kingdoms. This book contains crucial details about the Buddhist way of life in the Indian subcontinent. Si-Yu-Ki is the name of another travelogue written by the famous Chinese pilgrim Xuanzang (Hiuen-Tsang), who visited India in the 7 th century CE and described the culture, geography, and religion of India.