NUR-SULTAN,MAY 17 (Xinhua) - Chinese Vice Premier Han Zheng (R), also a member of the Standing Committee of the Political Bureau of the Communist Party of China Central Committee, meets with Kazakh President Kassym-Jomart Tokayev in Nur-Sultan, Kazakhstan, May 16,

WASHINGTON, MAY 17 (Xinhua) - U.S. President Donald Trump (L) welcomes President of the Swiss Confederation Ueli Maurer at the White House in Washington D.C., the United States, on May 16, 2019.

BEIJING,MAY 17 (Xinhua) - File photo taken on Dec. 16, 2009 shows world-renowned architect Ieoh Ming Pei attending a dinner event at the Museum of Chinese in America in New York, the United States. Ieoh Ming Pei, commonly known as I.M. Pei, has died at age 102, according to multiple reports on May 16, 2019. Pei was born in Guangzhou of China and moved to the United States in 1935. He won a wide variety of prizes and awards in the field of architecture.

WASHINGTON, May 17 (Xinhua) -- U.S. President Donald Trump speaks regarding immigration reform at the White House in Washington D.C., the United States, on May 16, 2019. Donald Trump unveiled a plan on Thursday to reform the nations immigration system, intended to favor high-skilled immigrants and restrict family-based migration.