Peng Liyuan, wife of President Xi Jinping, accompanied by Fok Wai-fun, wife of Macao Special Administrative Region Chief Executive Chui Sai-on, has exchanges with teachers and students while visiting the Macao Institute for Tourism Studies, in South China's Macao, Dec 19, 2019. [Photo/Xinhua]

Peng Liyuan, wife of President Xi Jinping, accompanied by Fok Wai-fun, wife of Macao Special Administrative Region Chief Executive Chui Sai-on, makes egg tarts while visiting the Macao Institute for Tourism Studies, in South China's Macao, Dec 19, 2019. [Photo/Xinhua]

Peng Liyuan, wife of President Xi Jinping, accompanied by Fok Wai-fun, wife of Macao Special Administrative Region Chief Executive Chui Sai-on, has exchanges with teachers and students while visiting the Macao Institute for Tourism Studies, in South China's Macao, Dec 19, 2019. [Photo/Xinhua]

Peng Liyuan, wife of President Xi Jinping, accompanied by Fok Wai-fun, wife of Macao Special Administrative Region Chief Executive Chui Sai-on, poses for a group photo while visiting the Macao Institute for Tourism Studies, in South China's Macao, Dec 19, 2019. [Photo/Xinhua]