The islands' soldiers have found a method to harvest rainwater that effectively removes salt content. On Song Tử Tây Island, soldiers nurture seedlings from seeds or branches to supply other islands and bring greenery to the island. Thanks to the class, local people could learn knowledge and access the State's legal documents and regulations to gradually eliminate outdated customs. A banh chung (square glutinous rice cake) making contest was organised, with materials including dong leaves, white glutinous rice and pork brought from Vietnam. They then presented the foreign friends several gifts, and invited them to try traditional dishes of Vietnam.
