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Among the four major city clusters, the throughput of airports in the Yangtze River Delta region ranked first in 2019, registering 265.57 million passengers, up 7.0 percent year-on-year, followed by the Beijing-Tianjin-Hebei region with a throughput of 146.66 million, up 1.1 percent year-on-year, the Pearl River Delta with a throughput of 142.03 million, up 7.4 percent and Chengdu-Chongqing region with a throughput of 110.40 million, an 8.2 percent rise.

Among Central Asian countries, Kazakhstan is China’s largest source of tourists.

Amazon’s Jeff Bezos is separately an investor in Heartland Robotics, a Massachusetts company created by iRobot co-founder Rodney Brooks that aims to build the “next-generation of industrial robots.”

Ambassador Zhang Jun, China's representative at the UN, retweeted the remarks, writing that China firmly supports the important role of the UN in the global response to COVID-19 and "will continue to do whatever we can in assisting other countries in fighting the pandemic".

Among them is the Ebola vaccine, which was approved by the United States in late 2019. The vaccine is currently approved in multiple other countries to support the World Health Organization's efforts against the disease in Africa. The company will highlight this, as well as its own COVID-19 vaccine and therapeutic programs, in addition to its portfolio of assets in oncology, vaccines, infectious disease and diabetes.