Dujiangyan is the oldest man-made water system in the world, and a wonder in the development of Chinese science. Built over 2,200 years ago in what is now Sichuan Province in Southwest China, this amazing engineering achievement is still used today to irrigate over 6,000 square kilometres of farmland, take away floodwater and provide water for 50 cities in the province.

    In ancient times, the region in which Dujiangyan now stands suffered from regular floods caused by overflow from the Minjiang River. To help the victims of the flooding, Li Bing, the region governor, together with his son, decided to find a solution. They studied the problem and discovered that the river most often overflowed when winter snow at the top of the nearby Mount Yulei began to melt as the weather warmed.

    The simplest fix was to build a dam, but this would have ruined the Minjiang River. So instead Li designed a series of channels built at different levels along Mount Yulei that would take away the floodwater while leaving the river flowing naturally. Better still, the extra water could be directed to the dry Chengdu Plain, making it suitable for farming.

    Cutting the channels through the hard rock of Mount Yulei was a remarkable accomplishment as it was done long before the invention gunpowder and explosives. Li Bing found another solution. He used a combination of fire and water to heat and cool the rocks until they cracked and could be removed. After eight years of work, the 20-metre-wide canals had been carved through the mountain.

    Once the system was finished, no more floods occurred and the people were able to live peacefully and affluently. Today, Dujiangyan is admired by scientists from around the world because of one feature. Unlike modern dams where the water is blocked with a huge wall, Dujiangyan still lets water flow through the Minjiang River naturally, enabling ecosystems and fish populations to exist in harmony.

    At thirteen, I was diagnosed（诊断） with kind of attention disorder. It made school difficult for me. When everyone else in the class was focusing on tasks, I could not.

    In my first literature class, Mrs. Smith asked us to read a story and then write on it, all within 45 minutes. I raised my hand right away and said, “Mrs. Smith, you see, the doctor said I have attention problems. I might not be able to do it.”

    She glanced down at me through her glasses, “You are not different from your classmates, young man.”

    I tried, but I didn't finish the reading when the bell rang. I had to take it home. In the quietness of my bedroom, the story suddenly all became clear to me. It was about a blind person, Louis Braille. He lived in a time when the blind couldn't get much education. But Louis didn't give up. Instead, he invented a reading system of raised dots（点）, which opened up a whole new world of knowledge to the blind.

    Wasn't I the “blind” in my class, being made to learn like the “sighted” students? My thoughts spilled out and my pen started to dance. I completed the task within 40 minutes. Indeed, I was no different from others; I just needed a quieter place. If Louis could find his way out of his problems, why should I ever give up?

    I didn't expect anything when I handled in my paper to Mrs. Smith, so it was quite a surprise when it came back to me the next day- with an “A” on it. At the bottom of the paper were these words: “See what you can do when you keep trying?”

    In an attempt to make the group texting experience more bearable, we've put together a list of strategies and things to consider when messaging multiple people at the same time.

    Think about who you're texting

    Whether you're in a group text with your parents, schoolmates, or work friends, consider what you're sharing - and who you're sharing it with. Parents may not be interested in the latest memes and explaining their slight differences can be a pain.

    Be mindful of people's schedules

    While not everyone's schedules are the same, most people are busy during typical work week hours, so sending a million mid-day texts isn't always ideal. Some people rise early or get to bed early. Avoid including them on a text that you know will ask for a bunch of responses super late at night or early in the morning.

    Name the group

    If you have the ability to name the texting or messaging group you're on - this is possible on an iPhone or when using Facebook Messenger - I strongly recommend you do so. Though not everyone will love the name you choose, naming your group will help you keep track of all your ongoing conversations.

    Don't write lots of one-word texts

    Please, if you must text in the group thread, don't deliver multiple short answers in a row. Everyone will despise you. If you have something pressing to share or say, try to sum it up in one brief text. If you have a lot to say, maybe try writing an email.

    Damn I seriously don't have time to be on my phone when I'm at work, and my friends keep texting on the group chat and I'm at a loss.

    - Melzz (@_Melzzxx) November 17, 2018

Workers are returning to their careers, or starting new ones after age 65.

More than ever, work is where many of us get our sense of purpose. That doesn't end at age 65. After being retired for only three months, Sue Ellen King returned to work at the University of Florida Health in Jacksonville, Florida, where she had been a care nurse and nursing educator for 38 years. She is now working part-time in a position created just for her. "It's perfect," she told The New York Times. "I get the satisfaction of having people appreciate what I do." With the average lifespan for those who reach age 64 now getting all the way to 84 years old, those who reach retirement age still have many potential years of work to go.

Job sites connected toward part-timers, temporary positions, and some can also turn up opportunities that may lead to longer-term work. Fred Dodd tried a part-time job after his unemployment as a clerk for large banks at age 63. He'd thought about retiring then. "But part of me just wanted to keep working partly for the money, but more just because I felt I wanted to do more in my career, " he said.

The retired have the advantage of not needing to focus on the earnings potential of whatever jobs they take on, so these older workers are attracted to more meaningful work. And since they are voluntarily putting their skills and experience to good use, they may well have more flexibility than mid-career people. Two-thirds of retirees who'd come back to the work world were doing meaningful work they enjoyed. Legal work and community service were popular choices, as was teaching—all areas in which older workers might have an opportunity to make their own schedules.

Earning more money rarely seems like a bad idea, but it can cause issues for retirees, including effects when they claim Social Security (申请社会保障) benefits early.

"Universal history, the history of what man has accomplished in this world, is at bottom the History of the Great Men who have worked here," wrote the Victorian sage Thomas Carlyle. Well, not any more it is not.

Suddenly, Britain looks to have fallen out with its favourite historical form. This could be no more than a passing literary craze, but it also points to a broader truth about how we now approach the past: less concerned with learning from forefathers and more interested in feeling their pain. Today, we want empathy, not inspiration.

From the earliest days of the Renaissance, the writing of history meant recounting the exemplary lives of great men. In 1337, Petrarch began work on his rambling writing De Viris Illustribus (On Famous Men), highlighting the virtus (or virtue) of classical heroes. Petrarch celebrated their greatness in conquering fortune and rising to the top. This was the biographical tradition which Niccolo Machiavelli turned on its head. In The Prince, he championed cunning, ruthlessness, and boldness, rather than virtue, mercy and justice, as the skills of successful leaders.

Over time, the attributes of greatness shifted. The Romantics commemorated the leading painters and authors of their day, stressing the uniqueness of the artist's personal experience rather than public glory. By contrast, the Victorian author Samual Smiles wrote Self-Help as a catalogue of the worthy lives of engineers, industrialists and explores. "The valuable examples which they furnish of the power of self-help, if patient purpose, resolute working and steadfast integrity, issuing in the formulation of truly noble and many character, exhibit," wrote Smiles. "what it is in the power of each to accomplish for himself." His biographies of James Walt, Richard Arkwright and Josiah Wedgwood were held up as beacons to guide the working man through his difficult life.

This was all a bit bourgeois (庸俗的) for Thomas Carlyle, who focused his biographies on the truly heroic lives of Martin Luther, Oliver Cromwell and Napoleon Bonaparte. These epochal figures represented lives hard to imitate, but to be acknowledged as possessing higher authority than mere mortals.

Not everyone was convinced by such bombast (浮夸的描写): "The history of all existing society is the history of class struggle" wrote Marx and Engels in The Communist Manifesto. "It is man, real living man, who does all that." And history should be the story of the masses and their record of struggle.

This was the tradition which revolutionized our appreciation of the past. It transformed the public history: downstairs became just as fascinating as upstairs. In place of Thomas Carlyle, Britain nurtured Christopher Hill, EP Thompson and Eric Hobsbawm. Whole new realms of understanding—from gender to race to cultural studies—were opened up as scholars unpicked the diversity of lost societies.

Ways to Develop Patience

Patience is essential to daily life and might be key to a happy one. Having patience means being able to wait calmly in the face of any difficulty or failure. This is all good news for the naturally patient or for those who have the time and opportunity to take a strict training in patience. But what about the rest of us? {#blank#}1{#/blank#}

Rebuild the situation. Feeling impatient is not just an automatic emotional response; it involves conscious thoughts and beliefs, too. If a colleague is late for a meeting, you can be angry about his lack of respect, or see those extra 15 minutes as an opportunity to get some reading done. {#blank#}2{#/blank#} And consciously trying to regulate our emotions can help us train our self-control muscles.

Practice mindfulness. In one study, kids who did a six-month mindfulness program in school became less impulsive(冲动的) and more willing to wait for a reward. {#blank#}3{#/blank#} Taking a deep breath and noticing your feelings of anger or overload can help you respond with more patience to your children.

{#blank#}4{#/blank#} In another study, adults who were feeling grateful were also better at patiently delaying satisfaction. When given the choice between getting an immediate cash reward or waiting a year for more, less grateful people gave in once the immediate payment offer climbed to $

18. Grateful people, however, could hold out until the amount reached $

30. If we're thankful for what we have today, we're not desperate for more stuff or better circumstances immediately.

We can try to shelter ourselves from difficulty or failure. {#blank#}5{#/blank#} Practicing patience in everyday situations will not only make life more pleasant at present, but might also help pave the way for a more satisfying and successful future.

A. Practice appreciation.

B. Practice in everyday situations.

C. Patience is related to daily life.

D. Patience is linked to self-control.

E. Mindfulness practice is recommended for parents.

F. But they come along with the life of being human.

G. It seems that there are everyday ways to build patience as well.