China has dispatched hundreds of military personnel to the border town of Gyirong in Tibet, after a wall of ice, mud, and rock collapsed into a mountain river, triggering a catastrophic flash flood on Thursday. Al Jazeera’s Katrina Yu reports from Beijing. Subscribe to our channel: http://bit.ly/AJSubscribe Follow us on X : https://twitter.com/AJEnglish Find us on Facebook: https://www.facebook.com/aljazeera Check our website: http://www.aljazeera.com/ Check out our Instagram page: https://www.instagram.com/aljazeeraenglish/ Download AJE Mobile App: https://aje.news/AJEMobile