How to get to Zhoushan, Zhejiang by bus from Siyang, Suqian City, Jiangsu Province? How many kilometers is it? Urgent, thank you!

It is about 650 kilometers from Siyang, Suqian, Jiangsu to Zhoushan, Zhejiang. The self-driving route is as follows: Siyang-Huaixu Expressway to Shanghai-Beijing-Shanghai Expressway to Shanghai-Changtai Expressway to Jiaxing-Zhajiasu Expressway to Jiaxing-Shenhai Expressway (across Hangzhou Bay Bridge) to Ningbo-Ningbo Ring Expressway to Ningbo Zhenhai Jiaochuan Hub-Yongzhou Expressway (across Zhoushan Bridge) to Zhoushan.