Top 5 Must See Places in Beijing

    Beijing is an old capital city with a lot of tourists attractions. What is the most representative place in Beijing? The answers are various. Here are the Top 5 Must See Places in Beijing.

1）. Forbidden City

    The Forbidden City is the ideal place for you to begin your exploration of Beijing. Make sure to wear comfortable shoes as you have to walk a lot! A multilingual guide recorder is recommended, as it can tell you the stories behind the palace.

Opening Hour: 8:30-17:00

Entrance Fee: RMB 60

2）. Tian'anmen Square

    Lying in the heart of Beijing City, it is the place for massive parades and gathering. It boasts of the largest square of such kind in the world. At sunrise and sunset the raising and lowering ceremony of the Chinese National Flag is well worth seeing.

Ticket fees: Free

Opening Time: Whole Day

3）. Great Wall

    Most of the sections of the Great Wall in Beijing are well-preserved, and the most famous section is Badaling. For the Great Wall hiking, get ready for strong footwear. For hot weather, please also prepare sunblock, sunglasses and water.

Badaling Great Wall:

Ticket Fees: RMB40 (Nov. 01 to Mar. 31); RMB 45 (Apr. 01 to Oct. 31)

Open Hours: 6:40 to 18:30

4）. Summer Palace

    Regarded as the largest imperial garden in China, the Summer Palace is in fact a park-styled royal retreat. With masterly design and artistic architecture integrating the highlight of Chinese garden arts, it has earned a title of "Royal Garden Museum".

Open Time: 6:30-20:30

Ticket Fee: RMB 40 (low season) / RMB 50 (peak season during the holidays)

5）. Temple of Heaven

    The Temple of Heaven worked as sacrificial compound buildings for the Ming and Qing emperors. What's the intriguing by-production of the temple is that if you enter the Temple of Heaven in the early morning, you can find many people doing all types of Kungfu, Taiji, dancing and other morning exercises.

Open Time: 6:00-21:00

Ticket Fee: RMB 35

Yesterday and Today

    Life in the twenty-first century will be different from life today. Between then and now many changes will take place, but what will the changesbe?

    The population is growing fast. There will be many people in world and most of them will live longer than people live now.

    Computers will be much smaller and more useful, and there will be at least one in every home. And computer studies will be one of the important subjects in schools then.

    People will work fewer hours than they do now and they will have more free time for sports, watching TV and travel. Traveling will be much cheaper and easier. And many more people will go to other countries for holidays.

    There will be changes in our food, too. More land will be used for building new towns and houses for all the people. Then there will be less room for cows and sheep, so meat will be more expensive. Maybe no one will eat it every day. Instead they will eat more fruit and vegetable. Maybe people will be healthier.

    Work in the future will be different, too. Dangerous and hard work will be done by robots. Because of this, many people will not have enough work to do. This will be a problem.

    Alexa is a form of artificial intelligence, or AI for short. Many people start their mornings by asking Alexa for the weather forecast or the latest news. A device(设备) that houses Alexa can also play music from your favorite playlists, keep a shopping list, order takeout food, answer questions, send messages and even run “smart” home controls.

    Training AI systems to respond to problems with human-like intelligence and learn from their mistakes can take months, or even years. Consider Alexa and similar software, such as Apple's Siri. To do the tasks its human owners ask, these systems must make sense of and then respond to sentences such as, “Alexa, play my Ed Sheeran playlist” or “Siri, what is the capital of India?”

    Computers can't understand language as it is spoken by people. So AI researchers must find a way to help humans communicate with computers. The technology used to get computers to “understand” human speech or text is known as natural language processing. By natural language, computer scientists refer to the way people naturally talk or write. To teach an AI system a task like comprehending(理解) a sentence or responding to a person 's last move in a board game, scientists need to feed it lots of examples.

AlphaGo is an AI system designed by Google that has beaten a human champion, Lee Sedol, at the strategy(策略) board game Go. To train AlphaGo, Google had to show it 30 million Go moves that people had made while playing the game. Then AlphaGo used what it learned to analyze those plays as it played against different versions (版本) of itself. During this practice, the program came up with new moves—ones never seen in games between people.

    The Pope John XXIII Regional High School robotics team has brought about many crea-tions in its laboratories. Most of these creations have earned them prizes in their robotics leagues, articles in local media and praise from many people around the world. None of them, however, can equal to what they experienced during one of their most recent projects.

    The robotics team helped design and build an electrically during one of their most recent projects, girl during an event snonsored by the GoBabyGo program and Toyota. The goal of the disabled is to build an electncally opiated vehicle and meet the needs of a specific disabled child. After hearing about the program, the robotics team jumped on the opportunity.

    When they got to the hospital for the event，the team members joined forces with engi-neers from University of Delaware, Toyota employees and and doctors to help a girl named Jaleah.

    Using instructions provided on an iPad by GoBabyGo,they put together a plastic battery-oper-ated vehicle-one of 12 that were made at the event-that was bespoke to Jaleah. Her vehicle was a baby blue jeep that had designs from the hit Disney movie Frozen and was decorated with snowflakes (雪花)，butterflies and flowers.

    More importantly，the team rerouted the electrical system in the car so that Jaleah only needed to push a large button on the steering wheel to drive the car, giving her the freedom to move. In addition, they helped design special seating structure to keep Jaleah safely secured.

    When they completed the project, Jaleah and her parents' reactions took the PJ robotics members by surprise.“ It was really satisfying,” PJ junior Austin Fett said. “When she was riding it, she was having so much fun. It was a great feeling. ”

    While they are looking forward to their future projects and competitions in the FIRST Technology Challenge league, the robotics team will always remember the days they helped Jaleah become a mobile kid.

    “We made something that she will love and use forever,” PJ senior Keith Johnson said.

    Depression(抑郁) can be a destructive illness, plaguing millions of people worldwide with feelings of sadness, hopelessness, and fatigue. Despite numerous antidepressant drugs, as many as a third of patients don't respond to medication. This has forced doctors to be more creative in finding different treatments for the condition.

    In the past two decades, researchers have tied depression to a seemingly unrelated condition: inflammation(炎症), the body's natural response to stress. It could rise from injury or inflection, or even emotional issues like an unhappy marriage or problems at work. Some amount of inflammation is generally beneficial, as it increases production of cytokines(致癌因子)，proteins that help us heal and protect us from the effects of overwork.

    But excessive cytokine levels, and the inflammation they bring on, could come at a cost—a number of studies suggests that high levels of cytokines could contribute to depression.

    Cytokines can reach the brain several ways: directly through the blood-brain barrier or indirectly by binding to nerve fibers elsewhere, which send signals to the brain to produce the inflammation molecules. In the brain, cytokines can disturb the production and release of several important signaling chemicals, including serotonin, dopamine and glutamate, which help control emotion, appetite, sleep, learning and memory. It's though that a lack of serotonin activity in the brain causes depression; most antidepressants increase the activity. But cytokines also have been shown to activate stress hormone signaling in the brain, which man also serve to develop depression.

    With all the evidence implicating inflammation in depression, doctors have been anxious to test anti-inflammatory drugs as a potential treatment. Four small studies published between 2006 and 2017 by research groups in Europe and Iran found that adults diagnosed with depression who took aspirin or another anti-inflammatory drug called Celecoxib, along with an antidepressant, got more relief from feelings of sadness, hopelessness, guilt and fatigue compared with those taking an antidepressant alone. However, Andrew Miller, a professor of psychiatry at Emory University, thought something was wrong in these small, limited studies. None of them looked at whether the participants had to have high levels of cytokines before they'd see a benefit from anti-inflammatory drugs.  "Unfortunately, much of the field has fallen into the trap of viewing inflammation as the be-all, end-all," Miller says. He and his colleagues wanted to see whether the effect of these drugs was limited to the depression patients with high cytokine levels, or if it helped all people diagnosed with depression.

The ancient Egyptians were known for their carefully record-keeping, documenting prayers, declarations, and taxes. This extensive writing has now been linked to physical marks on the bones of the kingdom's scribes, as revealed in a new study published in Scientific Reports.

The study focused on the bones of 69 adult men buried between 2,700 and 2,180 B.C. at Abusir. The researchers identified 30 of these individuals as either professional scribes or high-status officials who needed language skills for their work. These scribes exhibited specific physical characteristics related to their occupation. Many had osteoarthritis in their right collar bone, shoulder, and thumb, likely due to the repetitive movements involved in writing. Their ankle and leg bones were flat from sitting cross-legged for extended periods, and they also showed signs of spinal(脊柱) osteoarthritis, possibly from looking up to listen and then bending over to write on papers.

An fascinating finding was the prevalence of jaw joint issues among the scribes, which 

the researchers speculate might be associated with chewing on reed(芦苇) pens. The ink for these pens was typically black from soot(烟灰) or red from iron for important documents.

However, not all scholars are convinced by the study's conclusions. Cynthia Wilczak and Danny Wescott, who were not involved in the research, argue that more evidence is necessary. Only six of the 30 bones were confirmed to be scribes based on their titles, while the rest were identified based on their tomb locations and social status. Additionally, there is no dental evidence to support the theory that the scribes chewed on pens.

Despite these criticisms, Brukner Havelková and her team aim to expand their research by examining scribe remains from other locations to confirm their findings. While this study is just the beginning, it offers a unique perspective into the lives of ancient Egyptian scribes and the physical cost their work demanded.