Mitsung flourished for a time during the Tang dynasty (A.D. 613-907), but withered shortly thereafter. However, it continued on in Tibet, Japan, and Korea.
密宗在唐朝時曾經盛行一時，但不久就式微。反倒是西藏的密宗（藏密）和日本、韓國等地的密宗（東密）始終傳承不墜。