Who knows how much the train ticket from Wuzhou to Hezhou is? Is it half price to have a student ID card?

There are three trains from Wuzhou to Hezhou. K 150, K9336 is 2 1.5 yuan, and 1804 is 18.5 yuan, which are hard seats. If the student discount card on the back of your student ID card specifies Wuzhou to Hezhou, you can get half a ticket, but I went to buy a ticket yesterday. The conductor told me that I couldn't get tickets after eleven.