Maintenance workers assemble a retired Boeing 737-300 airplane in Binzhou, East China's Shandong province, March 12, 2015. Binzhou University bought the plane for teaching, practical training, and also scientific research. The plane, worth 10 million yuan (US$1.6 million), was reportedly owned by US Airways and bought by China Aircraft Maintenance & Engineering Co.,Ltd(CAMECO).[Photo/IC]