Peng Liyuan, wife of Chinese 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. (Xinhua/Wang Ye)

Peng Liyuan, wife of Chinese 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. (Xinhua/Wang Ye)

Peng Liyuan, wife of Chinese 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. (Xinhua/Ding Lin)

Peng Liyuan, wife of Chinese 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. (Xinhua/Ding Lin)