I checked for you. But there is no direct train runs from Ganzhou to Wenzhou. Try flight?

There is no direct train from Ganzhou to Wenzhou. You need to take train to K8724 13:08/17:38 to Nanchang first and then change to another train 2205(2208) 19:03/07:20(the next day) to Wenzhou. Of course you can also change trains in other cities, but it seems this is the most reasonable and proper one.

Do you mean Guangzhou or Ganzhou? I guess you rather refer to Guangzhou, right? There is only one train from Guangzhou to Wenzhou. K326 starts at 10:56 in the morning everyday and reaches Wenzhou 09:48 in the next morning. Is it what you are looking for?