Does train ticket counter at Chongqing airport work 24 hours ?

My flight will land at 6.00 pm then I have only 3 hours from Jiangbei International Airport to take high speed train (9.00 pm.)to Chengdu in the same day . I got the train booking number from booking online and need to show no. at counter to get the real ticket, so does train ticket counter still work at that time ?

Thanks in advance
Gnun