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As the US started to reopen in a bid to revive the economy, a second wave of the coronavirus hit. Many US states were forced to go back into partial lockdowns, harming the economy again. "This becomes a circle," Villafranca said.

As there are more flights than before and China's ecology is improving, birds are a major problem in civil aviation. Collisions often occur during takeoffs, the initial climbs and landings, and pose a significant threat to aircraft safety.

As the second railway connecting Tibet with the rest of the country, the Sichuan-Tibet Railway is expected to be completed in 2025, and will reduce the travel time from Chengdu to Lhasa to about 13 hours from about 36 hours.

As the year 2017 has come to the end, let's take a stock of ten major entertainment shows throughout the year.

As spring planting is in full swing, agricultural companies are sharing their experiences and expertise with farmers to help them use technologies to improve yield and productivity.