Exhibitions worth visiting Why do we collect: the story of the book collector.

Organized by the Smithsonian Libraries, this exhibition explores the stories of Western collectors over the centuries through the collection of ancient books and manuscripts（手稿）.

The exhibition will show the library's most special collections, helping visitors explore different eras and cultures, and introduce the history of American social life.

Place: National Museum of American History

Time: Nov 7,2018-July 1,2020

Closed on Christmas Holidays

Price: Free

Van Gogh and the United Kingdom

The Tate Britain in London will host the Van Gogh and Britain exhibition to exhibit more than 45 paintings of Van Gogh. This is the largest Van Gogh exhibition in the UK in the past 10 years.

One of the most important exhibits this time will be the painting "Sunflower" from the National Gallery of England. This painting was completed in 1888 and is one of the only four remaining pieces in the world.

Time: Nov 9, 2018-Apr 28, 2019 10：00am-17：30 pm

Stop ticking one hour and 15 minutes before opening

Place: Tate Museum, London SW1A

Price: Full Ticket 12 pounds Student Ticket 8pounds

Harry Potter: The history of magic

To celebrate the 20th anniversary of the publication of the novel "Harry Potter and the Sorcerer's Stone" by British writer J.K.Rowling, the New York Historical Society and the British Library holds this exhibition.

During the exhibition, the museum will invite J.K.Rowling to give a special speech for the fans of Harry Potter. The speech requires to book free tickets online in advance.

Place: New York Historical Society Museum

Time: 10:00 am-18:00 pm daily

Price: Full Ticket 21 dollars Student Ticket 16 dollars

Mysterious Ocean

"Mysterious Ocean" is a popular science exhibition for teenagers. It introduces the latest developments and research results of marine science（海洋科学） in recent years to help students develop their interests in oceanography.

In the exhibition, visitors can see specimens（样本）and enjoy their photos, or observe their structures through microscopes to feel the endless charm of marine science.

Place：American Museum of Natural History

Time：Mar 9，2019 - Aug 18，2019

Price：Full Ticket 28 dollars Student Ticket 14dollars

About six years ago I was going through a tough time, trying to work two jobs to afford my rent. On a cold Sunday morning, I went to GameStop - a video game retailer（零售商）, to cancel the game I'd reserved. A woman in a car parked outside called me when I exited the store. Though it was in broad daylight, I was shy about it and kept some distance when I walked over. She said she couldn't walk and requested me to purchase a Kinect, a popular game, for her as her son's Christmas gift. Because of her leg disease it was painful to her to move around. She called ahead but the employee wasn't willing to help. She gave me about＄100 in cash and her credit card.

I walked back in and bought the Kinect. Then it occurred to me that this woman, a complete stranger, trusted me. What was it that stopped me from lying about the payment method and just pocket her cash？She couldn't know I wasn't a cheat; and how could she possibly believe in someone so much？

I handed her the cash back, explaining I had to pay with her card - it was above ＄100 at the time, and handed over the game and her credit card. "This is what my son's been longing for. Thank you! By the way, just from glancing at you, I know you are the one who will be a friend to someone in need. You have a face of an angel!" she said. She gave me ＄10 and refused to take it back. Then she drove away, saying "Merry Christmas!"

She had no idea how much of a difference even ＄10 made. I was able to buy a few cheap groceries for the week and it really made a hard time in my life a little better. She may think I helped her; however, I truly feel like the one who was being gifted something amazing.

China's lasting research and development efforts have helped the nation keep its pioneering role in developing 5G mobile communication technology, related standards and the licensing stage．

Chinese telecom companies are trying to keep their leading role in the global race for 5G commercialization（商业化）.They are speeding up R&D of the fifth-generation mobile communication technology. The 5G technology is said to be at least 10times faster than 4G services which means it will enable superfast downloads of " heavy " files like movies, self-driving cars and virtual（虚拟的）reality games. It will do large-scale experiments of using 5G in 17cities. Yang Jie, chairman of China Telecom, said. "We aim to begin commercial 5G services in 2020."

China Mobile Communications Corp is planning to use 5G with AI and cloud technology for a latest network, which is planned to be used in the year 2020. The company has played an important role in the finish of the first stage of global 5G standards. The company will push forward the cloud deployment（云部署） of the superfast technology and build an intelligent network.

Similarly, China Unicom said it will start 5G testing this year, commercialize 5G in 2019and finally carry out large-scale commercialization in 2020.

China is expected to have 576 million 5G users by 2025, according to a report published by EY earlier this month. With the global united standard set to be finished in the next year or so, China is likely to advance its plan for the commercial use of 5G connections to 2019, to possibly become one of the first 5G-ready markets in the world, EY forecast.

In the past, China was behind other countries in publishing 4G and 3G licenses. But in 5G, perhaps China will race ahead in R&D. China is struggling to take a leadership role in the global landscape. China is also hungry to join in the decision of 5G international standards, making it one of the major players.

With Christmas soon approaching, many young people are buying gifts and making dinner reservations, but Geng Yingying is thinking about a serious subject – death.

Geng is a healthy 21-year-old student at Northwest Normal University in Gansu Province. She volunteered to donate（捐赠）her body for medical research and education because she wants to leave something to the world after her death. She first learned about body donation through a volunteer activity in 2016. Not long after that, one of her friends died in an accident. "I realized life is vulnerable（脆弱）and I wanted to make it more meaningful." she said.

Geng is one of a growing number of young Chinese who have registered（注册）as voluntary body donors in recent years. The number of registered volunteers for body and organ donations was over 2，610 in Gansu by November 20, compared with just 80 in 2014, according to the statistics released by the local Red Cross Society.

In Beijing, more than 21,100 people applied to donate their cadavers（遗体）by the end of 2017since the city started a body donation registry in 1999.So far, over 2,600 donations have been used for medical research and education, according to the Beijing Red Cross Society.

Zhan Haibing is a postgraduate student in the School of Public Health at Lanzhou University. He refers to cadavers as "silent teachers." "Silent teachers have played an irreplaceable role in medical education and research. They can give medical students a real understanding of human bodies．" Zhan said.

China's body donation program started in the early 1980s. Yuan said the traditional belief， lack of knowledge on donation procedures, and failure to obtain support from families of the donors are three main reasons that have long slowed donations.

As the laws and the overall environment for donation continue to improve, and people's attitudes on funeral customs are gradually changing, body donations have become more acceptable. People are showing more respect and understanding to the donors.

Meanwhile, many Chinese universities have called on "life education. " They ask their students to participate in volunteer activities in hospitals, funeral parlors, nursing homes and Red Cross societies to better understand the meaning of life.