Many young foreigners in China think high -speed (高速)trains ,Alipay (支付宝),shared (共享)bikes and online payment (线上支付)are the new Four Great Achievements (四大成就)of China .

Here are four young people from different countries along Belt and Road Routes (一带一路).They are talking about how the new things change (改变) their lives.

Video glasses make people look cool in movies. Now, thanks to scientists, our life could be even cooler. Professor Babak Parviz of the University of Washington in the US and his team have created a kind of electronic contact lens (隐形眼镜), which could allow you to watch TV and see electronic documents and e-mails directly on your eye.

The new lens can be put onto your eye and taken away just like a common contact lens. It has several parts,including an LED light, an electronic circuit (电路) and an antenna (天线) that picks up power and information.

In order not to influence people’s normal field of vision (视野), the researchers have kept all the parts particularly small. Some parts are thousands of times thinner than a human hair.

Besides its size, another challenge the researchers face is that the human eye can only focus on (聚焦) things a few centimeters (cm) away. Anything too close to our eyes will become blurry. People can’t see the things near us clearly. To solve this problem, Parviz used a thin, special lens called a “Fresnel lens” to make things look bigger.

     ▲      In order to make people feel safe about the lens, researchers tested it in a rabbit’s eye and it turned out that it did not appear to cause any health problems.

According to Parviz, one day, people will be able to see all the information they need directly from their contact lens. We may even be able to zoom(变焦) in on far-away views when enjoying views outdoors.

Parviz is now also trying to develop medical uses for the lens. He is working on putting a blood sugar sensor(感应器) into it to pick up the patient’s blood sugar level and other important medical information.