Shanshan county is rich in cities. Why are train tickets still on sale?

Does the subject want to ask, "Shanshan County has arrived in Fengcheng, why are train tickets still on sale?" The network is blocked. China Railway 12306 is a website where you can buy train tickets online. When users use it, the train from Shanshan county to Fengcheng has started, but it also shows that the ticket sales are caused by network congestion, so just change the network.