Mr. Wu is a Chinese pensioner who designs and crafts furniture in Shenyang, Liaoning, China.[70][71] He has patented his technique of growing wooden chairs and as of 2005, had designed, grown, and harvested one chair, in 2004, and had six more growing in his garden.[71] Wu uses young elm trees,[72] which he says are pliant and do not break easily.[71] He also says that it takes him about five years to grow a tree chair.[70]