Republic, the Tuva Republic, and in the Republic of Kalmykia and some other parts of China. During China's Cultural Revolution, nearly all Tibet's monasteries were ransacked and destroyed by the Red Guards. A few monasteries have begun to rebuild since the 1980s (with limited support from the Chinese government) and greater religious freedom has been granted – although it is still limited. Monks returned to monasteries across Tibet and monastic education resumed even though the number of monks imposed is strictly limited. Before the 1950s, between 10 and 20% of males in Tibet were monks. Tibetan Buddhism has five main traditions (the suffix pa is comparable to "er" in English): Gelug(pa), Way of Virtue, also known casually as Yellow Hat, whose spiritual head is the Ganden Tripa and whose temporal head is the Dalai Lama. Successive Dalai Lamas ruled Tibet from the mid-17th to mid-20th centuries. This order was founded in the 14th to 15th centuries by Je Tsongkhapa, based on the foundations of the Kadampa tradition. Tsongkhapa was renowned for both his scholasticism and his virtue. The Dalai Lama belongs to the Gelugpa school, and is regarded as the embodiment of the Bodhisattva of Compassion. Kagyu(pa), Oral Lineage. This contains one major subsect and one minor subsect. The first, the Dagpo Kagyu, encompasses those Kagyu schools that trace back to Gampopa. In turn, the Dagpo Kagyu consists of four major sub-sects: the Karma Kagyu, headed by a Karmapa, the Tsalpa Kagyu, the Barom Kagyu, and Pagtru Kagyu. The once-obscure Shangpa Kagyu, which was famously represented by the 20th-century teacher Kalu Rinpoche, traces its history back to the Indian master Niguma, sister of Kagyu lineage holder Naropa. This is an oral tradition which is very much concerned with the experiential dimension of meditation. Its most famous exponent was Milarepa, an 11th-century mystic. Nyingma(pa), The Ancient Ones. This is the oldest, the original order founded by Padmasambhava. Sakya(pa), Grey Earth, headed by the Sakya Trizin, founded by Khon Konchog Gyalpo, a disciple of the great translator Drokmi Lotsawa. Sakya Pandita 1182–1251 CE was the great-grandson of Khon Konchog Gyalpo. This school emphasizes scholarship. Jonang(pa) Its origins in Tibet can be traced to early 12th century master Yumo Mikyo Dorje, but became much wider known with the help of Dolpopa Sherab Gyaltsen, a monk originally trained in the Sakya school. The Jonang school was widely thought to have become extinct in the