Linked from
The 5 pages that link to Beijing–Guangzhou railway, each with the reason it gives.
ZhengzhouRelated: Its passage through Zhengzhou helped establish the city as a national rail hub.
Nanling MountainsRelated: Its route crosses the Nanling, connecting northern and southern China.
ShaoguanRelated: Its route through Shaoguan makes the city a key rail stop between north and south.
XingtaiRelated: The corridor serves Xingtai and connects it with major cities.