The incredible journey of Xiao Sa began on the streets of Yajiang, Sichuan province. Zhang Heng, a 22-year-old student from Hubei, was on a graduation cycling trip to Lhasa, when he saw the small dog lying tired on the street. He and his friends stopped to feed her, and the pooch started following them. At first, they thought she was just doing it for fun and would give up when she got tired, but the dog stuck with them day and night, and the guys felt she really wanted to go with them, so they decided to take her along to the end.
It turns out the cyclists were right, Xiao Sa really wanted to accompany them on their trip, and she showed incredible determination over the 20 days she ran alongside her new-found friends, all the way to Lhasa, Tibet. She traveled a total of 1,138 miles, climbed ten mountains over 4,000 meters high, and ran on uphill sections where many bikers prefer to take the bus. The only portion of the journey where Xiao Sa didn’t have to run was on a steep slope in Litang, where downhill speeds reach 70 km per hour, which made it impossible to catch up. So the cyclists made a cage for her and gave Sa a ride to the bottom, where she resumed her journey on foot.