Li Guangquan, a cleaner, sent a silk banner on Sunday to the railway police in the Longtansi Railway Station in Chengdu, Southwest China's Sichuan province.

"Thank you for saving my life," the 52-year-old said.

While patrolling the route of the Suining-Chengdu Express Train，Zhang Yong, Tang Rui and Luo Xianbiao, three policemen from the Longtansi station, found Li who was working on a road was hit by a car which had violated traffic regulations.

Li's head was injured and was bleeding. Symptoms of several fractures were found on his body.

The policemen carried Li on their car and sent him to the nearest hospital. Only after a medical examination showed Li was out of danger did they leave.