International Monetary Fund (IMF) Managing Director Christine Lagarde (L) attends a press conference in Davos, Switzerland, Jan. 21, 2019. The International Monetary Fund (IMF) said Monday that global expansion has weakened and that the world's economy is expected to grow at 3.5 percent in 2019, and 3.6 percent in 2020. (Xinhua/Xu Jinquan)