What are the starting and ending points of the battle of crossing the river?

The eastern starting point of the battle of crossing the river has always been Jiangyin. Personally, I think this answer is wrong. The real east starting point should be the present Zhangjiagang (former Shazhou). The reason is that Zhanghuanggang in Jiangbei is the easternmost starting point for preparing to cross the river. At the junction of Jingjiang and Rugao, the other side of Zhanghuanggang is now Zhangjiagang. At present, Shuangshan Island in Zhangjiagang has a monument to the battle of crossing the river. Therefore, the starting and ending place of the battle of crossing the river should be from Zhangjiagang, Jiangsu to Hukou, Jiangxi. Of course, the current Zhangjiagang is composed of the boundaries drawn by Jiangyin and Changshu respectively. Historically, there is nothing wrong with going east to Jiangyin, but from the perspective of respecting history, the exact answer should be Zhangjiagang, Jiangsu to Hukou, Jiangxi.