“I felt like it sounded like an earthquake, the car rushed over, (travelling at) 70 to 80kmh, very fast,” he said.
“We were walking forward, and we didn’t expect the car to come from behind.”
Chen escaped the car by jumping into the shrubbery beside the track, but most of his companions were closer to the middle of the group, his usual place, and did not have time to get out of the way.
“I still don’t understand how he rushed in,” Chen added, saying vehicles are not allowed in that area.
He said that more than 40 members of his exercise group had been there at the time and 11 of them had been killed, with two still unaccounted for.
The victims included people of all ages and from many walks of life, Chen said.
The authorities have not released a list of the victims.
Videos and pictures circulating on social media since Monday night showed that the victims also included people who were not using the exercise track at the time.
“I don’t understand why someone would want to kill so many people,” said Chen.
Another resident named Lai described the scene of the attack as “terrifying” and said the incident was “really painful”.
He had gone there because he knew his mother, who was unhurt, regularly went to dance sessions there.
