where to catch bus to Tongli from Suzhou and the frequency?

There are buses to Tongli at Suzhou North Bus Station or the tourist bus at Suzhou Train Station Square. Frequency, usually 20-30 minutes. Last bus from the train station at 17:15, still have some buses after that time at the bus station. Last bus back to Suzhou is at about 7pm. You need to comfirm this.