What is the fine-grained topic of the following text: It will also have to be based on the principle which the wise rulers of Tibet and of China laid down in a treaty as early as 823 AD, carved on the pillar which still stands today in front of the Jokhang, Tibet’s holiest shrine, in Lhasa, that “Tibetans will live happily in the great land of Tibet, and the Chinese will live happily in the great land of China”. Only return the topic.
Ancient Sino-Tibetan treaty of coexistence