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Around 500 men, women and children, part of a caravan of roughly 5,000 mainly Hondurans who have been trekking toward the US for weeks, scrambled over a rusted metal fence and surged into a concrete riverbed toward San Diego on Sunday.

Apple has been expanding its R&D push in China, one of the world's largest consumer electronics markets. Since 2017, it has established four R&D centers in the country - one each in Beijing, Shenzhen, Shanghai, and Suzhou - entailing a combined investment of 3.5 billion yuan (9 million) and employment for over 1,000 people dedicated to innovation in hardware, software and services.

Artificial intelligence, the revolutionary and diffuse technology, which has been sparking controversy and awe since its inception more than 50 years ago, has entered a stage that requires the global community to agree on regulations to serve the common good.

Ardern said New Zealand firmly conducts cooperation under the Belt and Road Initiative and will strengthen trade in dairy products and timber products. The two countries send a strong signal of safeguarding free trade and open markets by upgrading the current free trade pact, she said.

As China highlights coordinated regional development as a key driver of the nation's economic growth in the 14th Five-Year Plan period (2021-25), how the Yangtze River Delta region should contribute to this pursuit has figured in heated discussions among economists and policymakers.