The Heian period (平安時代, Heian Jidai) is the last division of classical Japanese history, spanning from 794 to 1192. Heian (平安) means "peace" and "tranquility" in Japanese. During this time, Emperor Kammu supported the emergence of new Buddhist movements by sending students such as Saicho and Kukai to China during the Tang Dynasty. Each developed different kinds of esoteric Buddhism and made crucial contributions to Japanese Buddhist history.