Peng Liyuan (C), wife of Chinese President Xi Jinping and World Health Organization (WHO) goodwill ambassador for tuberculosis and HIV/AIDS, receives the certificate for her outstanding work in HIV/AIDS prevention from UNAIDS Executive Director Michel Sidibe (R), as WHO Director-General Margaret Chan looks on during a ceremony in Geneva, Switzerland, Jan. 18, 2017. At the invitation of Margaret Chan and Michel Sidibe, Peng Liyuan on Wednesday attended the ceremony hosted by the WHO to renew its appointment of her as goodwill ambassador for tuberculosis and HIV/AIDS and to present her awards for her outstanding work. Peng was first appointed this role in 2011. (Xinhua/Xie Huanchi)