A 3D pancake printer, developed by Tsinghua University's independent research and development team, prints a cartoon character pancake at the 20th China Beijing International High-tech Expo in Beijing on June 9. The 3D pancake printer is 52 centimeters long, 50 centimeters wide and 26 centimeters tall. With different raw materials, the printer can print 30 different pancake flavors. [Photo/VCG]