Is it still far Yangzhou city from Hangzhou RAILWAY STation? What transportation I should use to go?

Yes, it is still far, around 180mi between. At the train station, only one train runs to Yangzhou, leaving at 10:06. It takes around 8.5h. If you cannot catch that, the long-distance bus is recommended. From the train station, you can take bus no. 188 or 185 or take a taxi to local North Bus Station, where buses to Yangzhou can be taken from 07:40 to 17:00. It takes 4.5h and costs CNY126.