What souvenirs can't be brought on board?
You can buy souvenirs to Jiefang Road Commercial Street (Yuejin Road), there are all varieties, the price is not expensive gadgets. Take the No. 202 bus and get off at the Binhai cinema. Cross the street and continue for a while, then turn left.
Can not carry, you can check! In addition, Hainan is not allowed to transport coral individuals.
Shell conch seems to be only checked, coral is prohibited trading. Near the East China Sea has been sold, but the price must be very expensive, I think it is better to go to the first market