are there any train from Yiwu to Haihou? how long is the journey? how much is the ticket fair? thank

Hi, do you mean from Yiwu to Haikou, instead of Haihou?
If so, I'd like to tell you that one train operates from Yiwu to Haikou each day: K511. It deaprts from Yiwu at 15:28. The whole journey takes more than 29 h. And the ticket fare is about CNY 287 for hard seat, CNY 494-533 for hard sleepr and CNY 783-818 for soft sleeper.

thank you guys for your kind info. could you kindly tell me what is hard seat, hard sleeper and soft sleeper. and which station in haikou will the train stop. thank you.

Hi, hard seat means you could get a seat holding a hard-seat ticket of the train. Hard sleepr and soft sleepr mean that you can lie on a bed holding a sleeper ticket. The difference lies that there are six sleepers in a hard-sleepr room and four in a soft-sleeper room. And the soft sleepr is more comfortable than the hard sleeper. By the way, the train would stop at Haikou Railway Station.