How should I travel from Shantou to Xiamen by shortest & cheapest means?

Actually, there is no direct train that operates between these two places. Thus you are advised to take a direct long-distance bus from Shantou Bus Station.The bus schedules are 08:00, 09:20, 11:05, 12:50, 15:10, 19:50 and 21:00. The ticket fare is CNY 120 per person.

Check the Train Guide for China. There is a high speed train from Chaoshan Train station. It has regular trains to Xiamen. Check if the date you wish to travel is during high season, else take a coach/ bus which connect the airport to the train station.