If as China states that great progress and economic bounty has come to Tibet, ever since the occupation o fTibet by China and that all Tibetans are happy, then why are the Tibetans wanting to flee from Tibet? China has asked Nepal to ruthless crackdown on Tibetan refugees and now it is know that the border crossings are heavily manned to prevent Tibetans fleeing. China is bent on Sincising Tibet so as to make them change to being Han. And China is pouring in Han Chinese into Tibet to change the demography so tha tit becomes a Han majority Region. Therefore, China should let more escape so that genuine Tibetans automatically become a minority to the Han people who are pouring in, like rushing waters of a ruptured dam.