For example, there is no direct train from Hangzhou to Kashgar. You can only go from Hangzhou to Urumqi and then transfer to Urumqi to Kashgar. Is it considered one-way?

It is counted as a one-way trip, and two tickets are collected at the same time, and only one student ticket is counted.

The effective discount interval is Hangzhou-Kashgar, so the transfer ticket purchased is considered a discount

There is no train from Hangzhou to Urumqi. If there is no need to go to Urumqi, then you can transfer in Xi’an. The discounts within the interval are considered one-way. The Railway Bureau has a transfer plan. Tickets like yours to Urumqi are not considered one-way discounts. . In principle, it is the line with the least number of transfers and the shortest time.