Tibetan Gylong mudslide is alleged to be related to a high-altitude ice avalanche. The hardest part about disasters like this is that they often occur in high-altitude, sparsely populated areas where traditional rain gauges and cameras are difficult to cover. Even if a satellite detects something abnormal, the time available for downstream warning and evacuation may be very short. Will global warming cause glaciers to retreat, permafrost to change, and extreme rainfall to coincide—thereby increasing risks like this? What I care about most is whether warning systems can turn “seeing danger” into “having time to act”: among cross-department data sharing, communications in mountain ravines, and drills with villagers, which link should be improved first? #XizangGylongMudslide