Swertia Island is an island that has not been over-developed yet. I went there in mid-July for three meals in 80 nights. The ship ticket is 120. The rest cost little. Unlike Dalu Island for five bottles of mineral water, Swertia Island is very cheap. Whether it is seafood or daily necessities, there are large beaches in the ebb tide every day. Walking more than 300 meters from the shore to the chest, the water is very clean. Opportunity to take your family back