The two vaccines are among 23 candidates being tested in human trials, according to the World Health Organization. More than 130 others are in preclinical studies.
The typhoon also disrupted train services in Hainan. A total of 180 flights at the two airports in Haikou and Sanya had been canceled by 2 pm Tuesday.
The two East African Nations are among the fastest developing countries predicted by the World Bank in 2018. Ethiopia has consistently recorded annual growth of up to 8 percent in the past three years and its economy is predicted to have surpassed Kenya's this year.
The two leaders spoke highly of the development of bilateral ties in recent years, and agreed to continue to make joint efforts and promote more fruitful results from cooperation in various fields.
The two countries signed a memorandum of understanding in Beijing on Nov 18 to designate 2021 as the China-Greece Year of Culture and Tourism.
The training "had an impact on me, helping develop ideas of overthrowing China's system and implementing the Western system in China", he said.
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The two countries should continue to enhance practical cooperation to hunt fugitives who have fled abroad, make joint efforts in tourism, panda research and soccer, and strengthen coordination under multilateral frameworks such as the United Nations, Xi said.
The two countries' ground and air forces jointly practice three stages of classic warfare: the mechanized defense, fire strike and counterattack.
The two presidents also discussed prospects of Russia-US relations, in particular, developing "mutually beneficial trade and investment ties."
The two sides also exchanged views on the Korean Peninsula nuclear issue.