KUNMING, Feb. 28-- A year after the deadly terrorist attack in the southwestern Chinese city of Kunming, the trauma still lingers in survivors' lives.

On March 1, 2014, five terrorists went on a stabbing spree at the train station in Kunming, capital of Yunnan Province, killing 31 people and injuring 141 more.

The father of a college girl injured in the attack said his daughter's life was saved only after a number of operations but her health has basically recovered.

But the man, surnamed Dong, worried that the operations could affect her mental health in the future.

"The whole family have never talked of the attack as we fear any mention might trigger a negative impact on her psychology," he said.

The farmer said he seldom goes to cities but he feels assured after seeing TV news reports of regular police patrols in urban areas.

Ma Yanqin, a bus driver who helped get injured people to hospital after the attack, could not bring herself to read or watch any news reports on the attack for a month afterwards.

Ma often suffered from insomnia and her sleep slowly returned to normal only months later, she said.

"I feel grateful for the increased police presence at the railway station now," Ma added.