8 March 2013 Last updated at 22:17 ET Operation Empty Plate: China’s food waste campaigner By Celia Hatton BBC News, Beijing Xu Zhijun’s campaign has gained the ultimate endorsement from President-to-be Xi Jinping Ordering lunch at a restaurant is a challenge for Xu Zhijun. As the creator of “Operation Empty Plate”, an online anti-food-waste campaign, Mr Xu avoids ordering too much. As a child, he toiled in the rice paddies