what's the easiest transportation way to use from Xiamen airport to Putian?

You can take airport shuttle bus to North Railway Station first. The ticket fare is CNY 15 per adult.
Then take high-speed trains to Putian directly. There are many schedules every day. It takes no more than an hour on the way. And the ticket fare of first class seat is CNY48.5 and second class seat is CNY40.5.