<Dl> <Dt> Second dissemination </Dt> </Dl> <Ul> <Li> Atiśa </Li> <Li> Tilopa </Li> <Li> Naropa </Li> <Li> Milarepa </Li> </Ul> <Dl> <Dt> Nyingma </Dt> </Dl> <Ul> <Li> Longchenpa </Li> <Li> Patrul Rinpoche </Li> <Li> Mipham </Li> </Ul>

When did tibet become a part of china