Yun and his colleagues placed the passengers in their dormitories while they slept in the hallway and cars at the night. They took out all the food, medicine and daily necessities and gave them to the passengers.

The railway tracks were blocked by fallen rocks. Yun went with 11 colleagues there, trying to repair the tracks. There were no big machines to use, so they used their hands and shovels to clean up the mud and stones.

"We only had one thing in mind. Even though the train can't go through, we need to dig a way for them to walk out," said Yun.

[Video provided by Beijing bureau of China State Railway Group]

On Aug 1, Beijing Municipal Public Security Bureau sent helicopters to carry food and daily necessities to the trapped people there. However, after the helicopters arrived at Luopoling Railway Station, Yun, who used to be a soldier, realized that the helicopters were facing difficulty on finding a landing spot. If they couldn't find a safe spot to land, the mission will be canceled. Yun rushed to his office to grab the red and yellow flags used in railways. He chose an open court with no barriers and waved to the helicopters with the flag signals he learned when he was a soldier, guiding them to land on a safe spot successfully.

Cheers from the crowd overwhelmed the roar of the helicopter and wind. The pilots gave Yun a thumb-up.