Worked well
Just to be clear, collection from any train station in China does not mean metro or subway train systems. We saw a couple trying to redeem vouchers at a metro in shanghai. Seems obvious, but not to everyone. Customer information at the station was average and they told us to arrive 1.5 hours before the train left. Turns out you sit for boarding until 15 mins before the train leaves. Obtaining tickets was easy. Go to the shortest queue when doing so.