Zou Huazhang, a 41-year-old middle school teacher, stands on a ladder as he looks at a 3-meter-high model of a "Transformer" he made at his home in Wuhan, Hubei province July 23, 2011. It took Zou a week to make the model out of recycled cardboard boxes as a summer vacation present for his 9-year-old son, local media reported. [Photo/Agencies]