If you want to enter the subway, you have to hold your transportation card or smart phone in your hand. Would it be a trouble if you are busy with other things, such as taking care of your children or dogs. 

Now, good news has arrived for some passengers. A subway line in Shenzhen uses 3D facial recognition(人脸识别) technology to help recognize passengers. All they need to do is downloading(下载) the required app, and then they can enter the station just by looking into a screen at the gate for about 2 seconds. In this way, they can enter the subway more quickly than scanning a OR code (扫描二维码). The new technology greatly speeds up entry times. Now, about 30 to 40 passengers can pass through the entrance every minute. 

Facial recognition has been used in many other areas of our life. At KFC stores across China, customers can order their meals by scanning their faces in front of a self- serving screen. Customers used to carry bank cards or mobile phones to withdraw money, but now they can do that just by scanning their faces at the ATMs of banks. With the help of this technology, the security check(安检) step in the airport can be completed in about 12 seconds, according to Guangzhou Baiyun International Airport. 

Do you think facial recognition will totally take the place of OR codes?

Confucius teaches us wisdom to deal with confusion, anxiety and fear. 

Confusion, worry, fear. . . Having such bad feelings is not strange to us. But how can we get through these challenges? We can find Confucius' wisdom in The Analects of Confucius. 

子曰："知者不惑，仁者不忧，勇者不惧。"——《论语》

Confucius said: "The wise are free from doubts, the benevolent from anxiety, and the brave from fear. "—The Analects of Confucius

What does it mean?

Wei Shengkun is a Chinese teacher from the Affiliated High School of Peking University in Beijing. He shares that being wise, kind and brave seem simple and easily understood. However, what makes a person truly wise is questioned. 

Zhu Xi, a great thinker in the Southern Song Dynasty (1127-1279), believed that a truly wise person understand s the main rules of the world. This shows the importance of learning and thinking, because only through these can we truly become wise. Zhu also pointed out that the most important thing in life is to be kind to others and have a heart full of kindness. Such a person won't worry because their kindness helps people around them and helps themselves as well. This person will also have the courage to face the unknown, so they won't fear anything. 

In all, to overcome(克服) bad feelings, we need to start learning as soon as possible and look for the world's greatest truths. 

Whenever we think about something, most of us have a feeling of words going through our minds. However, if you stop and try to listen to your own thoughts, you'll notice that they are not in order at all. It's easy to imagine that we think in the language that we speak, but this is completely wrong. Language can show the results of our thinking, but it's not the thinking itself. 

Getting the joke

Think about what happens when you "get" a joke: "I've decided to sell my Hoover (吸尘器). . . well, it was just collecting dust (灰尘). " Whether you laugh or not, you react (反应) at once. Then you try to put into words what the joke actually is. 

Another example is the thinking you need when playing a fast-moving video game. You might shout "Yes!"or "Got you!". But if you had to talk about all your plans aloud, your game play would slow down. Thoughts always come first and the expression of our thoughts in words comes later. 

Thinking in silence

Humans think about things without language all the time, and only report their thoughts in the language when they have time to do so. You can test this with a game. Read a word quickly, out loud or in your head. You'll find that while you're doing this, you won't be able to think with words, but you can still plan, reason and imagine, pretty much as normal. 

Smart minds

Just because humans don't need language to think, it doesn't mean that words don't help us. The real magic of language is that it allows people to share their thoughts with others. This means you don't have to face the world by yourself-you can learn from ideas created by the elderly. This lets humans develop science and technology, laws and stories. People can think without language, but language makes humans so smart. 

Every year, millions of birds are killed or hurt when they fly into buildings. Why does this happen?  Birds are flying into windows and tall buildings that are all covered by glass.

Many birds fly from one place to another. Most of the time, they live in the wild, such as forests and wetlands.  They might see small trees and flowers inside a window and want to rest on these plants. The birds do not know there is glass between them and the plants.  

Some birds fly at night. They use the moon and stars to help guide them in the right direction. Tall buildings with lights on at night can confuse（迷惑）the birds.  The birds see the light, but they cannot tell that the light is coming from inside a building. They fly toward the light and crash into a building. On many mornings, there might be several dead birds lying on the ground.

  Many office buildings now turn off their lights at night. This helps reduce the number of birds that fly into buildings and it also helps save energy.

Most kids love sweets. Why？When we eat or （喝）sweet foods, the sugar enters our blood and influences our brain. It （留下）god feelings with us, making us want more. In fact, all （美味的）foods do this, but sugar has an especially strong power. That's why doctors （总是）advise us to Early humans often had very little food, so our （身体）learned to store a lot of sugar as fat. In this way, we （节省）energy for when there was no food. But today, most people have more than enough. So it may now be harming our （健康）.

It's certain （更少的）sugar. The trouble is that, in today's world, our foods are filled with sugar. Although our （餐）look better, large amounts of sugar are often added. To solve the problem, we should take more exercise, （两次）a week at least. And remember, next time you want some cookies, eat an apple instead.

Brainstorming is the practice of coining up with ideas or solutions. But we do have some rules to follow for successful brainstorming.

Focus on quantity （数量）over quality. When it comes to brainstorming, the more ideas, the better.

Don't worry about the quality of your ideas for now. Remember that your goal is to come up with as many ideas as possible. Even if none of them are perfect, you'll still have many creative ideas to use for your final plan.

Encourage big or unusual ideas. Although unusual ideas may not be immediately practical, just creating those ideas gives your brain training. It can also help to produce creative solutions that are hard to come up with.

Don't say no to the ideas of others. You can put together the best parts of different ideas to create new, even better ones. Even if you're not brainstorming as a group, you should still think about sharing your ideas with others and asking them for their advice.

You don't have to regard yourself as a very creative person to come up with excellent ideas and solutions at once. Even if you don't find the perfect solution, just practicing it can help to improve your creativity. Put these tips together and you are sure to come up with some great ideas.