Tulip hut cannot be upgraded. According to the public information of Obi Island, all interiors can be upgraded except tulip hut. Obi Island is a children's web game developed and operated by Guangzhou Baitian Information Technology Co., Ltd., which was officially released on September 25th, 2008. Obi Island is a game community developed by Guangzhou Baitian Information Technology Co., Ltd., which focuses on making friends and simulating business. It was officially released on September 25th, 2008. Obi Island takes the slogan "Love Obi Island, be happy and worry-free" to provide a green, leisure, healthy and interesting game community for players, so that players can give full play to their imagination and creativity in the game and become happy little Obi.