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Another key part of the positive psychology literature is called "grit", which means the ability to do the work needed to reach a goal, to stick with it, to not give up. Angela Lee Duckworth, a Chinese-American psychology professor, also at the University of Pennsylvania, developed a test for grit. She found a technique called "growth mindset", which shows struggling students that they can build their mental capacities by focusing on special areas where they are having difficulties. Just letting students know that they can improve makes a big difference in their attitudes, Duckworth says.

Ant Financial, Alibaba's financial unit, has invested 2.06 billion yuan (1 million) in second-tier bike-rental player Hellobike, giving the latter a unicorn valuation of .47 billion.

Another achievement has been in brand recognition, where Pirelli has quickly become a brand known for technology with an Italian touch.

Another local media Somoy TV reported on Tuesday that four people who had been diagnosed with dengue fever, died in hospitals in Dhaka and southern Barisal town, some 180 km south of Dhaka, in the early hours of Tuesday.

Another reason supporting the renewed optimism is the belief that a trade deal between China and the United States is imminent, after a long drawn-out trade spat.