The structure cantilevers 36m over the 613m deep sinkhole. The top of the sinkhole is extremely narrow which can only accommodate a small passageway. Skyboat is proposed to span over the passageway and cantilever out to each side of the mountain ridge. Similar to the tumbler toys, it is proposed to lower the structure centre of gravity and utilize the minimum area (10metres by 30metres), in which way, the self-balance of the structure is therefore achieved.

Professor Xin Yuan is a structural engineers working on extend the boundary of structures. He founded XinY in 2001, it consists of a main office in Shanghai, with office in London. He founded and administrate 'China Structure Forum' ( www.okok.org) for over 20 years, today with about 360,000 members and over 1,000,000 posts.

XinY is a team of structural engineersworking on Extend boundary of structures. Founded in 2001, it consists of a main office in Shanghai, with office in London. They founded and administrate 'China Structure Forum' ( www.okok.org) for over 20 years, today with about 360,000 members and over 1,000,000 posts.