Chu Shih-Sing (3rd century), Fa-Hsien (5th century) and Hsüan-Tsang (7th century) travel to Central Asia, India and Indonesia where they «hunt» for Buddhist scriptures. When later Tantric Buddhist texts appear in India, it does not take long until they are written down in China as well .
3. From the 8th century on Buddhism in India gets under pressure both by militant Hindus and by Muslim invaders, whose ancestors already brought Buddhist high cultures in Central Asia to an end. But where the Buddhist teaching still exists, it flourishes, especially in Kashmir and the Pala-Empire in the Northeast. Vajrayana doctrines and methods are now taught publicly at big universities like Nalanda, Vikramashila, Odantapuri, Somapuri, Jagaddala, Vallabhi. These academies are not run by monks and nuns only. From this period of Indian Buddhism the «Histories of the 84 Mahasiddhas» are handed down: Historical persons, who often worked with Buddhism in an unconventional way but reached great results in their practice .
At this time, influences of both Tantric Buddhism and Hinduism exist in other countries of the region as well. In Burma, Thailand, Cambodia and Indonesia monuments and statues show emanations of the Buddha like we know them from Vajrayana: Forms like Vajrapani, Avalokiteshvara, Tara, Prajnaparamita etc. A prominent academy exists in the Indonesian trade centre Shrivijaya (today: Palembang). The biography of the great master Atisha (982–1054) tells us that he spends several years there in order to receive transmissions which he would bring to Tibet years later.
With the overthrow of the pala Empire by Central Asian Muslims in 1193 Buddhism ceases to exist in India. Eventually, Nalanda is conquered and destroyed. A downright genocide against the Buddhist population takes place; libraries are burnt down, temples and pilgrims’ places demolished. Indonesia and the Maldives, too, become Muslim states; other countries east of India change to Theravada Buddhism.
 Zürcher, E., Buddhismus in China, Korea und vietnam. In: Bechert / Gombrich, Рp. 215–251.
 Dowman, K.: Masters of Mahamudra. Songs and histories of the Eighty-four Buddhist Siddhas. New York 1986.
 Warder: Indian Buddhism, Рp. 506–516, describes the last phase of the process of destruction of Indian Buddhism (including Muslim sources).