Cleaner Wu Minghua (2nd, R) eats students' leftovers from lunch with his colleagues at a dinning hall of Yantai University, in Yantai city, East China's Shandong province, Oct 16, 2013. Wu and another six cleaners have been eating leftovers for nearly five months to remind students of saving food. The 62-year-old is also a retired teacher and said he doesn't mind eating leftovers as it is like eating his children's things. [Photo/CFP]