The oddness of life in space never quite goes away. Here are some examples.

    First consider something as simple as sleep. Its position presents its own challenges. The main question is whether you want your arms inside or outside the sleeping bag. If you leave your arms out, they float free in zero gravity, often giving a sleeping astronaut the look of a funny balled （芭蕾）dancer. “I'm an inside guy,” Mike Hopkins says, who returned from a six-month tour on the International Space Station. “I like to be wrapped up.”

    On the station, the ordinary becomes strange. The exercise bike for the American astronauts has no handlebars. It also has no seat. With no gravity, it's just as easy to pedal violently. You can watch a movie while you pedal by floating a microcomputer anywhere you want. But station residents have to be careful about staying in one place too long. Without gravity to help circulate air, the carbon dioxide you exhale (呼气) has a tendency to form an invisible （隐形的）cloud around you head. You can end up with what astronauts call a carbon-dioxide headache.

    Leroy Chiao, 54, an American retired astronaut after four flights, describes what happens even before you float out of your seat,”Your inner ear thinks your're falling . Meanwhile your eyes are telling you you're standing straight. That can be annoying—that's why some people feel sick.” Within a couple days —truly terrible days for some —astronauts' brains learn to ignore the panicky signals from the inner ear, and space sickness disappears.

    Space travel can be so delightful but at the same time invisibly dangerous. For instance, astronauts lose bone mass. That's why exercise is considered so vital that National Aeronautics and Space Administration (NASA) puts it right on the workday schedule. The focus on fitness is as much about science and the future as it is about keeping any individual astronauts return home, and, more importantly, how to maintain strength and fitness for the two and a half years or more that it would take to make a round-trip to Mars.

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    Daban town is famous for girls and windmills, while Loulan is a myth (神话) in the desert. Two thousand years ago, beside the beautiful Luobu Lake, there lay Loulan ancient city of the Silk Road. Businessmen from every country gathered there with lots of dancing parities. Everything shows that people in Loulan lived a rich life then.

    However, two thousand years later, this rich land suddenly disappeared from the map of China. It became an area covered with sand and dead tree trunks.

    Loulan was first "discovered" by a Swedish man named Sven Hedin in 1900, and people from America, Britain, Japan and Sweden all set foot here. Then in the 1930s, a Chinese named Huang Wenbi came to Loulan for the first time. He visited and studied this area and found many relics that were beautifully and carefully made.

    It is recorded that the ancient city of Loulan was the capital of the Loulan Kingdom during the Han and Jin Dynasties, and covered an area of some 10, 000 square kilometres. Inside the city, there are the ruins of government offices, temples and other old buildings. Outside the city there are some dried-up rivers and much farmland. In the past century many things have been dug up there including Han Dynasty coins, mirrors and many others of Greek and Roman times. All these things show that a lot of business between the East and the West once took place there.

    Lying on the northwest of the Lop Nur area, the Loulan Kingdom is now a lifeless area with endless ＂forests＂ of mounds (小丘) which aren't easily seen in other parts of the world. Its mystery has been attracting many people from many countries.

    The Golden Week holiday is extended to eight days this year, as China is ushering in two celebrations from Oct. 1-8: the National Day holiday and the Mid-Autumn Festival. For anyone who is looking forward to a rich，refreshing break, here is a list of some of the best exhibitions, shows and things to do around town.

    Qin and Han dynasties relics

    The Civilizations of Qin and Han celebrates the glory of those two dynasties (221BC-AD2 20) in terms of politics，economics, arts and culture. More than 300 artifacts from 30 museums and institutions across the country are on show through Nov. 30.

    If you go: 9am-5pm till Nov. 30. Closed on Mondays. National Museum of China, 16 East Chang'an Avenue，Dongcheng District. 010-6611-6188.

    Ticket: Free

    Artist's solo show

    Chen jialing is a famous artist who seeks a connection between Chinese and Western art, and demonstrates and excellence for industrial design. He will show dozens of ink paintings. Also on display are his designs on decorative works for daily use, such as bowls, furniture pieces and silk scarves.

    If you go: 9am-5pm till Oct. 8. National Museum of China, Dongcheng District.

    Walk into a time machine at Beijing Design week

    This year's Beijing Design Week is allowing visitors to explore exhibitions and events in the city's Dashilar area with interactive experiences that apply advanced technology, such as virtual reality.

    By simply scanning a QR code, information about exhibitions and events linked to the Beijing Design Week being held in the Dashilar Design Community pop up. Push the button on your screen, and you can use the “time machine” to wander through the alleys of Dashilar area.

    If you go: till Oct. 5.3 Cha'er Hutong, Xicheng District.

    Ticket: Free

    German designer Weingart's works at Beijing Design Week

    Another highlight of this year's Beijing Design Week is an exhibition from German - born designer Wolfgang Weingart. His style has been influencing designers and his students in Europe and North America over the years.

    If you go: 9:30 -5:30 pm till Oct 8. Art Museum of Central Academy of Fine Arts, 8 Huajiadi South Street, Chaoyang District 010-6577-1018.

    Ticket: 120 yuan per person.

    “The failure to play is now a serious issue and it calls for action for change,” says Sir Ken Robinson, a leading expert in education, creativity and human development. This is the driving force behind Outdoor Classroom Day—a global teacher-led campaign, supported by Dirt is Good, a company producing daily chemical products.

    Outdoor Classroom Day, taking place on 17th May and 1st November this year, will see schools around the world swap the inside for the outside and take learning into the playground and beyond to make playtime a key part of the school day. This might involve using natural objects like stones to do sums, or going on an insect hunt to encourage curiosity. By now, Outdoor Classroom Day has grown from a grassroots movement to a global campaign that is expected to benefit five million children and over 40,000 schools from all around the world in 2018.

    This is helping to change the trend that sees many schools selling up or building on their playgrounds and cutting back on playtime to make more room for academic studies, while at home children's lives are increasingly filled with organized activities intended to help them learn. Today globally 61% of parents surveyed in the Dirt is Good Qualitative Study said that children don't know how to play without using technology.

    Outdoor Classroom Day is making playing time happen, with 22% of participating schools having increased their playtime since joining the campaign. 93% of teachers surveyed saw improvements in children's creativity after playing outside, and 97% believe that time outdoors is necessary for children to reach their full potential.

    Scientific studies show that real play—the active, physical, self-directed play—is essential for children to develop key life skills that are not taught elsewhere. Few would question the value of developing creativity, leadership, resourcefulness, and curiosity.

Four things that you can't miss in Macao

    Go Bungee Jumping at the Macao Tower

    The Macao Tower, 338 meters tall, is the world's 10th highest tower, with kinds of activities, such as eating and entertainment. One of the activities is the bungee jump. The Macao Tower Bungee Jump is 233 meters high, making it a Guinness World Record as the highest commercial bungee jump in the world. Raise your arms and off you go! If you are not daring enough to jump that height, you can try the sky walk on the 57th floor—it's still amazing. Take this chance and tick off this item on your list.

    Enjoy a traditional Portuguese dinner

    Macao was once colonized (殖民) by Portugal before 1999. As a result, Portuguese culture has deeply affected Macao.

    Many Portuguese settled and opened Portuguese restaurants here, but it is more adaptable to Chinese people.

    Visit a museum

    Macao, as a little city with only an area of 30.5 square kilometers, has 23 eye-catching museums. Due to its special history, both eastern and western historical relics can be found. Many of them are preserved for cultural relics, tourist spots or museums, such as the Grand Prix Museum, Maritime Museum and Wine Museum.

    Go into an entertainment place

    Well known as the "Las Vegas of the Orient", Macao has 33 entertainment places. You can find different themed entertainment places with their hotels and attractions around every corner of Macao, especially on Taipa Island. Among all, The Venetian is the most popular. With a huge shopping mall and Vegas-style design, it is a must-go place for both tourists and locals to shop and enjoy free time. So when you come to Macao, just walk around and you will still be amazed.

It is William Shakespeare, the great coiner, who is given credit for the word. Coriolanus, one of his characters, compares going into exile (流放) to a "lonely dragon" retiring to his cave. He was talking about a physical state: someone who was lonely was simply alone. Then, thanks to the Romantic poets, the word took on emotional meanings. Loneliness became a condition of the soul. For William Wordsworth, who famously "wandered lonely as a cloud", the natural world offered an escape from negative feelings of loneliness—a host of flowers could provide "cheerful company". Today, loneliness is often seen as a serious public-health problem, creating the feeling of disconnection.

In his book Solitude, Netta Weinstein, a psychology professor wonders the rewards of time spent alone. He begins with an account of stories of solitude created by figures such as Michel Montaigne, a writer, and Edward Hopper, a painter. Netta then draw on laboratory work, interviews and surveys to clarify how being alone really affects the human mind.

It is common to treat loneliness and solitude as synonyms (同义词) but they are not. The author suggests that what is negatively described as one state can be positively expressed as the other. Loneliness, often perceived as negative, can potentially be transformed into a positive experience of solitude. To this end he emphasizes how being alone can help restore people and offers practical advice. In a noisy world, he argues, people should make time to be alone, away from attention-grabbing motives.

The book's interviewees mostly regard a lack of company as a contributor to autonomy. But this depends on whether solitude is desirable or not. Enforced solitude, such as that experienced by prisoners, typically leads to nothing but suffering. Elective solitude, by contrast, affords space for self-reflection. It can open the door to "peak experiences" such as wonder, harmony, and happiness. In a highly-connected digital age, however, many readers do not fancy their chances of ever taking a long enough break to have such experiences.