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An old man in his 80s saved an 8-year-old boy from drowning in a river in Shiyan village, Jiangyin of East China's Jiangsu province, recently, and by coincidence, the old man also saved the boy's father from the same river 30 years ago.

Andrew Ng, co-founder of Coursera and former chief scientist at the Chinese company Baidu, tweeted on Tuesday: "Kudos Mark Zuckerberg for speaking out against AI fear mongering."

Analysts said Russia has also been a major source of crude for China, and the pipeline will be one of the latest energy cooperation between the two countries, which will help ensure China's energy diversification.

Analysys estimates China's mobile payment market will account for transactions worth 100 trillion yuan by 2019.

Analysts said the central bank is likely to lower its rate of 2.25 percent to 2.50 percent by one-quarter percentage point when its two-day meeting ends on Wednesday. A cut would reverse the Fed's recent policy of raising rates.