As the Internet is developing fast，more and more new words and phrases have been created in Chinese. Here are some examples.

    One of the most popular words is Dianzan，which is often used when you quite agree with someone. Another example is Renxing.

    When you say somebody is Renxing，you mean that they will do whatever they like. The phrase Miaosha first came from online shopping，which means you can complete your shopping orders before others. But now it's widely used when you achieve your purpose in a very short time. If you describe somebody as a Tuhao，you mean that he is very rich.

    You can find lots of such new Chinese words. Keep learning and you'll know more about Chinese culture.

No one knows when the first kite was made. The first record of a kite was more than 2,000 years ago in China. Han Xin, the leader of an army, wanted to bring down a king. He decided to dig a tunnel (隧道)into the king's palace. He flew a kite over the wall of the palace to make sure the length (长度)of its string (线).In this way, he could determine how long the tunnel should be. His men in the tunnel took the kite string with them. When they reached the end of the string, they knew to dig up.

    Kites have been flown in Japan for hundreds of years. In the 1700s, kites were flown in autumn to give thanks for a good harvest. They were also flown to send good wishes to couples who had their first son. Today in Japan, kites are often flown as part of a celebration, such as the beginning of a new year. And kite festivals are held each year in many parts of the country.

    Kites have been used for scientific purposes in the western world. In 1752，Benjamin Franklin tied a key to a kite and flew it in a storm to find out that lightening was a form of electricity. In the 1890s, Lawrence Hargrave invented the box kite to test ideas about flight. From 1898 until 1933, the United States Weather Bureau (气象局) used box kites to collect weather data. The Wright brothers also experimented (试验)with kites. What they learned helped them make the first airplane flight in 1903.

    "What? You too? I thought I was the only one." Have you ever said to someone? If so, you may have ended up becoming friends.

    It seems that similarity often helps form a friendship. Aristotle once said, "Some define (给……下定义) it (friendship) as a matter of similarity; they say that we love those who are like ourselves."

    Now, there are some scientific explanations for this idea. The scientists from the University of California said friends have similar brains, Scientific American reported.

    The scientists invited 42 university students to take part in a scientific test. Each student watched the same set of videos. At the same time, the scientists scanned (扫描) their brains and recorded their brain activities.

    According to their study, friends who watched the same videos reacted (反应) in similar ways. Similar parts of their brains lit up while watching the videos, especially the parts that were connected with motivation, learning and memory. However, people who weren't friends had different reactions to the same videos.

    "Having close friends whose brains react like ours may be rewarding because it reinforces (加强) one's own values, opinions and interests," lead scientist Carolyn Parkinson told Business Insider.

    But brain similarity is not the only thing that can result in a friendship. Scientists from the University of Leipzig, Germany, found that a friendship is also based on how physically close you are to someone. They did a scientific test on first-year college students who met in class for the first time. In this test, students who sat next to each other were more likely to become friends.

    Cycads(苏铁)grow in warm places. They are tall and green all year round. Their leaves grow on the top and flowers seldom come out. Some have bright orange fruits. They usually need hundreds of years to grow into adult plants.

    Cycads are facing problems now. In South Africa, the situation of cycads is getting terrible, but this has drawn little attention from the public. "In fact, there are 38 kinds of cycads in South Africa. Among them, 2 kinds have disappeared since 2003 and 25 kinds are in great danger," said a gardener. "Do you know what the loneliest plant is in the world? It is Wood's Cyead. Someone found it in a forest in 1895. It is the only one of its kind."

    So what causes cycads to be in danger? Surprisingly, the danger is from the people who love them most. These slow-growing adult cycads even sell for tens of thousands of dollars each. As time goes by, they have become a symbol(象征)of wealth and position(地位)in society. This makes cyead lovers want to own more. Cyead lovers buy and plant them in their private gardens. As a result, nearly all these cyeads die because the living conditions have changed.

    Recently, South African government has taken some actions to protect cycads from being stolen traded. At the same time, people around the world should also work together to protect the plants.