In 2003, Xie's workload became heavier after she was assigned to work at the school's rehabilitation center, which was established that year.

To ensure every child received scientific and targeted rehabilitation training, she worked out specific plans for them. For children with mental handicaps, Xie patiently coached them to master basic skills of taking care of themselves in daily life. She also spent lots of time training children with hearing and speech impairments to work on their pronunciation, which often caused her to develop a swollen throat.