The massive avalanche, which hit Nyingchi in Tibet on Tuesday evening, has reportedly left at least eight people dead after vehicles outside a highway tunnel were trapped.
The Chinese government has sent a team to oversee help in the search and rescue operation and recovering bodies.
The avalanche occurred on a section of road between Pai Village in Mainling county and the exit of the Doxong La tunnel in Medog county, China's state-run Xinhua news agency reported. So far, authorities have not confirmed how many people remain missing or are still trapped.
Chinese newspaper Global Times reported that a total of 131 rescuers and 28 emergency vehicles were sent to the location.
As of 5:30 pm on Wednesday, emergency rescue headquarters dispatched 246 rescuers, over 70 vehicles, 10 pieces of large-scale equipment and 994 search devices to excavate a rescue passage 350 meters (1,000 feet) in length, the report added.