How to refund the air ticket in Kunming? Can I refund the special ticket? Can I get a discount ticket?

Yes, if you bought it online in the early days, you should have a direct refund button online.

You can also return it at the counter and find a local sales point. Some special tickets and discount tickets should be refundable (in fact, only a part can be refunded if the discount is too high). It was marked on it when I bought it (can I exchange it, can I exchange it, can I return it, and what percentage? Written above). So just find a counter and ask clearly.