1 . Walled Cities Of The World

There are numerous historical walled cities across the world, whose walls date back several centuries. These walls were fortification (碉堡), a necessity throughout medieval eras for defense. They have been preserved as historical monuments and popular tourist attractions in the modern time.

York, England

The city of York is a medieval city situated in the north of England. Historically, the city was ruled by the Romans, Angles, and the Vikings before being incorporated as part of the Kingdom of England in 954. Located in the city are walls built in 71 AD which have been restored and extended with time.

Xi’an, China

The city of Xian is one of the oldest cities in China. It prospered economically as the eastern last station of the Silk Road. The existing walls were originally built in 770 BC and reconstructed in the 14th century under the Ming Dynasty. The walls are well preserved and are a major tourist attraction in the city.

Quebec City, Canada

Quebec City was a colonial (殖民地的) town which was fortified by the settling Europeans. The walls began to be built in 1608 under both British and French regimes (政权). A fort was constructed by the British as an additional defensive measure and remains undamaged to date. The city’s fortifications were listed as a UNESCO World Heritage Site in 1985.

Mexico City, Mexico

Historically, the City of Mexico gained importance as the Aztec Capital. The Spanish then drove out the Aztecs and rebuilt it as the Spanish Capital. The walls protecting the city were built in 1521. Mexico City is also home to numerous colonial-era buildings which together with the walls are major tourist attractions in the city.

3 . Cancer-fighting genes in elephants could help tackle one of the biggest killers of people, according to research. Despite their large bodies and long lifespans, elephants are much less likely to die from cancer than humans, with death rates of less than 5 percent.

The paradox has puzzled scientists because more cells lead to greater replications (复制), which increases the possibility of the body failing to detect damaged DNA or a faulty cell that can result in tumors(肿瘤). Elephants live for almost as long as humans and weigh up to five tons.

However, a group of British and European scientists say they have taken a big step towards solving Peto’s paradox, named after the British epidemiologist Sir Richard Peto. Elephants, they say, carry a much larger more diverse group of tumor-fighting proteins.

The findings, published last week in the journal Molecular Biology and Evolution, raise hopes that the cancer fighting genes in elephants could be the key to tackling cancer, which kills about 167, 000 Britons yearly. Cells keep dividing throughout an organism’s life, each carrying the risk of producing a tumor. One of the body’s weapons is a gene called p53 known as the “guardian of the genome”, which hunts cells with faulty DNA. It encourages the cell to repair itself or self-destruct, keeping the cell from combining with others and producing tumors.

Humans have two versions of p53 but elephants have 40, said the researchers. Biochemical analysis and computer simulations also showed that an elephant’s p53 genes are structurally slightly different, providing a much larger anti-cancer toolkit. The researchers suspect that while faulty cells might be able to skirt two p53 versions, they cannot combine with other cells as easily in the face of dozens.

The findings will open the way for research on how p53 genes of elephants are activated and on medical treatment for humans.

5 . “Shuan Q” is a meme(网络流行语)which can be used as a popular way to say “I’m speechless” with a matching emoji(表情包)at ached behind. No-one can deny the power of the Internet. Some believe it makes language weaker but some see a brighter side, believing it makes online communication easier between strangers.

An elementary school teacher in Hangzhou, Zhejiang province, says that the evolution of Internet slang is not all fun and carefree. From his daily observations, he believes the “geographic boundary” between Internet slang and formal language is disappearing. On many occasions, the composition she has received from pupil have been flooded with abbreviated slangs(网络梗).

During last year’s Two Sessions, several representatives put forward proposals such as “regulating online language” and “banning vulgar(粗俗)words”, specifically to address this issue, expressing the need to reduce online language misuse and strengthen the protection of Chinese.

However, many experts and scholars of linguistics and communication including Feng Zhiwei disagree. Feng, believes that Internet language is a natural product of the dynamic development of language, and it is not necessary to ban it.

6 . How to communicate complex information?

Did you ever have to read a presentation where you felt like you’re lost in confusing terms, data and concepts? Are you giving others this same experience?     1     But there are ways you can simplify your presentation and reengage your audience. Here’s how you can get complex information across.

Use interactive content. It gets the readers more involved in your presentation by letting them play an active part.     2     Beyond that, questionnaires and chatbots provide personalized and specific answers to readers as part of your presentation. Making your presentation interactive used to be hard, but now you can just use Storydoc. Go make your first interactive presentation. It’s easy as pie.

    3     No one will read a presentation with a thousand words. Do everyone a favor and use images. Images can be super effective at communicating complex information and save you a lot of needless text. In fact, visual representation of data and concepts can often convey what words cannot. Use diagrams and images to illustrate your points and simplify the complex.

Narrate your content.     4     Whether it’s through text to speech Al or video bubbles, centering your presentation around a story can help guide your audience through the complexity, making it more digestible, engaging, and memorable.

Use examples and fables. They can help explain clearly the complexity of ideas for they are what we’ve already known and understood.     5     More importantly, the real secret lies in selecting examples that are not just familiar but also deeply relevant-those are the ones that will truly ring with your listeners

9 . Too much stuff, too much to do, too much stress.... These are weighing people down and breaking their spirit.     1     Here are several things to help you get started.

The first step is to sort out your possessions. To live a simple life, you need a simple living space. So take some time to tidy your living area. Focus on keeping things that you value deeply and throw away things that you don’t need any longer.     2     Finally, you will be shocked to see how few possessions you actually use in your daily life.

    3     As humans we tend to think what we are used to as naturally right. However, there could be problems in the million little things that bother us as we go about our day. The best skill you can develop in your life is the ability to take a step back and look at things objectively by raising doubts about what is seemingly the way it is supposed to be.

We should always stay mindful and live with intention. If there is something in your life that you don’t love, change it! Cut out the things that aren’t serving you. You can write down what an ideal day would look like for you in five years’ time. Then outline what things you want more in your life and what things you want less.     4    

Managing your time wisely counts.     5     Instead, take some time to think about whether it’s something that you are excited about attending. Be intentional with how you spend your time and take control of what you do. This is how you can guarantee yourself a flexible schedule and do everything in an unhurried way.

In my first attempt to get control over my technology use, I set my phone to vibrate rather than ring. Soon after, another problem appeared. The act of continually checking the phone became a habit. I knew then that using only tips to permanently reform digital life is difficult. We should go past the notification settings (通知模式) on our devices or apps and consider the more essential topic of why we use so many apps in the first place. What all of us who are struggling with these challenges need is a technology usage philosophy, something that explains from the ground up which digital tools we allow into our lives, why, and under what conditions.

Cal Newport, a professor of computer science, defines Digital Minimalism (极简主义) as a “philosophy of technology use in which you focus your online time on a small number of carefully selected activities that strongly support the things you value, and then happily miss out on everything else.”

To do so, however, we cannot passively allow the tools and apps provided by the internet age to control how we spend our time or how we feel. Instead, we must take steps to draw the positive aspects of these technologies while sidestepping the negative aspects.