Yang Zongfu from Yiwu city, Zhejiang province rides his self-made floating survival machine dubbed “Noah's Ark”, Aug 6, file photo. Yang claims the ball-like machine, 4 meters wide weighting six tons, could load as much as 27 tons and still float in the water. It contains safety seats, telescopic equipments and a washroom, and is shock-absorbing and heat-resistant. The invention cost him 1.5 million yuan and took two years. [Photo/CFP]