Dalai Lama told more than 2,800 Tibetans from Tibet that they play a key role in preserving Tibetan culture and also keeping the Tibetan issue alive in the world. This is because of their unflinching determination and also patriotic spirit. Therefore the future preservation of Tibetan culture also depends on the Tibetans living inside Tibet. The Tibetan leader also says that he is optimistic about resolving the Sino-Tibetan problems.