Hi. I am in suzhou north railway station. How to go to wuyishan by rail or bullet ride

There's only one ride via both suzhou (not suzhou north) and wuyishan.
It (number K525) is from nanjing to fuzhou. departed from suzhou station at 3:59 in the afternoon and arrived at wuyishan station at 3:31 in the morning(midnight).
The ride provided hard seat, hard bed and soft bed.