sentences:  This, then, would be the first appearance of Vietnamese Zen, or Thien Buddhism.Padmasambhava, in Sanskrit meaning ""lotus-born"", is said to have brought Tantric Buddhism to Tibet in the 8th century.In Bhutan and Tibet he is better known as "Guru Rinpoche" (""Precious Master"") where followers of the Nyingma school regard him as the second Buddha.