Hi Ms. Valeriag,

You can go from Hangzhou to Suzhou either by train or long distance bus. Long distance buses to Suzhou can only be found at Hangzhou East Bus Station and Hangzhou North Bus Station. Bullet train to Suzhou is can be taken at the Hangzhou Railway Station.
you can look for more information on this page:
https://www.travelchinaguide.com/cityguides/zhejiang/hangzhou/getting-there.htm

Tina