The nomadic savages or tribes who lived in the neighbourhood of China were the Hephthalites (the Sanskrit name of which is Hunas). Studies show that the Hunas extended their kingdom from the border of Persia to Khotan in Central Asia. There were two branches of Hunas that advanced towards the west. One branch of the Hunas moved towards the Roman Empire and the other towards India. This branch of the Hunas, which came to India, was referred to as the White Hunas. The invasion of India by the Hunas began about a hundred years after the Kushanas’ invasion. India's trade with the Roman Empire came to an end with the invasion of Rome by the Hunas.
Emperor Harsha's southward march was stopped on the Narmada river by
Fa-hien, a Chinese pilgrim, visited India during the reign of Chandra Gupta II. His primary aim was to visit the Buddhist religious places and to take with him the copies of the Buddhist religious texts. He, therefore, travelled through the Gupta empire and also wrote down his impressions about India. As his main interest was religion, we know nothing about the political condition of India from his account.
Nalanda University was a great centre of learning, especially in
Nalanda was a Mahavihara, a large Buddhist monastery, in the ancient kingdom of Magadha (modern-day Bihar) in India. The site is located about 95 kilometres (59 mi) southeast of Patna near the city of Bihar Sharif, and was a centre of learning from the fifth century CE to c. 1200 CE. It is a UNESCO World Heritage Site.
Varahamihira was one of the only renowned Indian Astronomer, Mathematician and Astrologer whose name became a household word throughout India and it is said his near contemporaries Aryabhata and Brahmagupta even did not match with the popularity of Varahamihira. Varahamihira was born in 499 A.D. into a family of Brahmins settled at Kapittha, a village near Ujjain. His father, Adityadasa was a worshipper of the Sun god and it was he who taught Varahamihira astrology.