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With the completion of the Human Genome（基因组）Project more than 20 years ago, and the discovery of the double helix structure of DNA enjoying its 70th birthday last year, you might assume that we know how life works. Think again!

Evolution has a 4bn-year head start on us. However, several aspects of the standard picture of how life works-the idea of the genome as a blueprint, of genes as instructions for building an organism, of proteins as precisely tailored molecular（分子）machines and more-have wildly reduced the complexity of life. 

In the excellent book How Life Works, Philip Ball explorers the new biology, revealing life to be a far richer, more delicate affair than we have understood. Ball explains that life is a system of many levels-genes, proteins, cells, tissues, and body modules-each with its own rules and principles, so there is no unique place to look for an answer to it. 

Also, How Life Works is a much more appealing title than the overused question of "What is life?". We should be less concerned with what a thing is, and rather more focused on what a thing does. Defining a living thing implies an unchangeable ideal type, but this will run counter to the Darwinian principle that living things are four-dimensional, ever changing in time as well as space.

But it's an idea that is deeply rooted within our culture. Ball points out that we rely on metaphors（比喻）to explain and explore the complexities of life, but none suffice. We are taught that cells are machines, though no machine we have invented behaves like the simplest cell; that DNA is a code or a blueprint, though it is neither; that the brain is a computer, though no computer behaves like a brain at all.

Ball is a terrific writer, pumping out books on incredibly diverse subjects. There's a wealth of well-researched information in here, and some details that are a bit chewy for the lay reader. But the book serves as an essential introduction on our never-ending quest to understand life.

As I prepared for my Level 8 Royal Conservatory of Music piano exam, memories of previous disappointing marks filled me with dread and anxiety. The mere thought of booking the exam made me feel completely strained. However, fate had other plans in store for me.

Just when I thought things couldn't get any worse, my trusty 10﹣year﹣old electric piano malfunctioned. The middle C note played as an F﹣sharp, and multiple other keys were out of tune.

Despite my distress, my father refused to buy a new piano and instead urged me to be more resourceful. Initially, I was at a loss without my beloved electric piano. But after struggling for a few days, I was determined to find every available piano room on campus. After discovering hidden pianos in corners, I spent countless hours practicing. As my exam drew near

One day, while practicing in a piano room, one of my teachers walked in and offered me a mini exam. To my surprise, I found a place where I could be anyone.

Playing the piano became my escape from the anxieties of adolescence and allowed me to express myself freely. When it was time to play in front of the examiner, I no longer feared judgment. Instead, I only feared not being able to represent all my hard work. As the lights came on

Eventually, I received my mark. Not only did I achieve a rarely given "well done", but I also discovered a newfound appreciation for music. Whenever I feel discouraged, some lessons are best learned the hard way.

    In my early thirties, I decided to climb Mount Kilimanjaro, the highest mountain in Africa at 5, 895meters above sea level. 

    After months of preparation, I started my great 1 . At the base of the mountain, I met Mik, a local porter, who warmly 2 me. Mik's job was to carry my equipment up the mountain, set up the tent, and carry everything back down after reaching the 3 . 

    The first day of the climb was 4 the rain forest, across a slippery , muddy ground covered with tree roots and vines (藤蔓) . Mik was carrying 30 kilos on his head! By that evening, we made it to 3, 000meters. The air was 5 and it was colder. When I arrived at the campsite for the night, my tent was already set up and waiting for me. 

    Day two was much steeper and rockier. I really had to 6 what I was doing. And I felt guilty for the tough 7 Mik had to work in. Yet when I turned to Mik, he said with the biggest smile, "pole, pole, "which means"8 , take it easy" in his native language. I 9 back, my burden lighter somehow. 

    Over the next five days, the climb got 10 difficult. The temperatures could 11 from 21℃to below freezing in a few hours. At 5, 700 meters, there's only half the oxygen 12 in each breath compared to at sea level. That leaves many people with severe headache. Yet Mik always had a smile and a positive attitude. It had an enormous impact on mo, giving me the 13 to keep going. 

    Even today, when I find myself 14 with anything in life, I just think back to Mik and his smile. A great attitude can bring joy to those around you, or even 15 strangers to the top of a mountain. 

China's taijiquan, also known as tai chi — a major part of the amazing {#blank#}1{#/blank#} (open) ceremony of the 2008 Beijing Olympic Games and represented by numerous practitioners worldwide —{#blank#}2{#/blank#} (add) to UNESCO's Representative List of the Intangible Cultural Heritage of Humanity on Thursday. On its website, UNESCO described the cultural icon as "a traditional physical practice characterized by relaxed, circular movements that can be used {#blank#}3{#/blank#} (adjust) breath besides cultivating an honest and neutral (中性的) mind".

"Their inscription onto the list showed the unique value of intangible cultural heritage on people's health and {#blank#}4{#/blank#} (sustain) development," said Wang Chenyang,{#blank#}5{#/blank#}inspector from the Ministry of Culture and Tourism who is in charge of the work related to intangible cultural heritage.

Taijiquan, {#blank#}6{#/blank#} originated during the mid-17th century in Wenxian county in Jiaozuo, Henan province, is practiced almost {#blank#}7{#/blank#} (day) throughout the country by people of all ages and ethnic groups, according to UNESCO's website. {#blank#}8{#/blank#} (influence) by Taoist and Confucian thought and theories of traditional Chinese medicine, the practice has developed {#blank#}9{#/blank#} several schools or styles named after a family or a master's personal surname, such as Chen style or Yang style.

They are passed down through clan-based transmission or the master-apprentice model, {#blank#}10{#/blank#} built upon the yin and yang cycle and the cultural understanding of the unity of heaven and humanity, UNESCO said.

Last September an American started a trip through Southwest China on a standard bike she had bought at a local shop. In three months, Jennifer Holstein cycled 2,500 kilometers through three provinces with just two small bags.

Living in Beijing, her life was already great. But Holstein felt the urge to travel the world and look for adventure. It was mid-August of 2021 that the idea came to her to travel China by bicycle. At that time, Holstein had never cycled for more than 20 kilometers around her local city of Beijing.

Holstein shared an experience from the beginning of her trip when she found herself stuck in a tunnel (隧道) with a flat tire (轮胎). It was dark and hot, and she was so scared because she had never changed a tire before. Suddenly, a group of cyclists old enough to be her grandparents came and rescued her.

In addition to receiving the kindness of people across China, Holstein also experienced several unique cultural experiences by attending three local weddings. She spoke about one wedding in detail, "I was in the middle of a small village in Sichuan province, and I was taken into a local Tibetan family's home and they invited me to take part in a wedding. They gave me a dress and even did my makeup. I never thought I would ever have the chance to take part in a Tibetan wedding."

According to Holstein, "Many people want to travel the world and take huge risks, but never do. Don't just live your life hoping your wildest dreams will become a reality someday. Try first and the rest will work itself out." In addition to biking for her own passion and curiosity, Holstein also linked her ride to raise 22,000 yuan for the United Foundation for China's Health.

Adam Wolfers believes that his son's autism(自闭症) has a positive impact on his hobby of photography. 10yearold Morgan has always possessed a 1 eye for capturing the world around him through his camera. Diagnosed(被诊断) with autism at the age of 3, Morgan has had a hard time 2 with others. 

3 these difficulties, he has shown an exceptional talent for noticing details that 4 others. Morgan has found clarity and focus in nature, particularly in the vivid colors and shapes of plants, leading him to 5 the art of nature photography. 

Not 6 with merely capturing pictures, Morgan has even established his own photography business, becoming one of the top sellers in a local shop. 7 , he donates ten percent of his 8 to support autistic artists through the Blue Ribbon Arts Initiative. 

However, his motivation for photography 9 financial gain, as he simply wants to share the beauty he 10 with others. His work has gained 11 , with one of his photos picked by National Geographic for 12 in the Commonwealth of Pennsylvania. 

His parents teared up as they told what his photography means. Morgan's photography has become his saving grace(体面) because it gets people to look 13 his issues. "He's going to make his 14 , " his mother said. 

Morgan advises all of us to try new things and explore our 15 and what we want to do. In other words, don't be afraid to see things differently.