Guanmei, a 65-year-old woman of the Dong ethnic group, is the inheritor of the Grand Song of Dong (侗族大歌), a national intangible cultural heritage in China. Her hometown Zaidai Village in Guizhou, southwestern China, is home to the Grand Song of the Dong ethnic group.

The Grand Song of Dong dates from more than 2,500 years ago. The way Dong singers use their vocal cords (声带) is different from how formally trained singers do. It is a folk chorus with multi-parts, no conductor, and no accompaniment. Organically growing from their natural surroundings, it is recognized internationally as "the sound of Nature."

Before the Dong people had a writing system in 1958，the Dong culture, their history and stories were all recorded by means of songs. As a Dong saying goes, "Rice feeds the body and songs enrich the soul". The Dong people sing right from their childhood. While not singing, they all work in their rice field.

Guanmei has been singing the Grand Song of Dong all her life, making her a famous singing teacher in her hometown and nearby areas. "The songs are our means of passing on wisdom, knowledge and life experiences to others. I will not exist in this world 100 years later, but Grand songs will. I'm honored to do this job," Guanmei said.

Kind-hearted, Guanmei has been volunteering to teach the Grand Song of Dong to the Dong children for over 30 years. Now she has more than 300 students. Guanmei is pleased to see the village children come to her house willingly when they have free time.

"Nowadays, more and more young people leave the village and settle in cities. Decades later, the Dong children out of the village might know nothing about Grand songs. We should do something just now. It's our mission. What is once lost might be lost forever," added Guanmei.

When was the last time you used a telephone box? I mean to make an actual phone call — not to shelter from the rain. Ages ago, right? The last time I used a phone box for its intended purpose was…2006. I was conducting auditions (试演) for my play in my tiny old shared house in London. Hoping to impress some talented actors to come and work for me for nothing, I spread some throws over the sofas and lit candles to make it seem a bit more "young professional".

As I rushed outdoors to empty the wastepaper baskets, the door swung shut behind me. Suddenly I was locked outside. My mobile phone was inside, but luckily there was a telephone box across the street. So, I called Directory Assistance, got put through to our landlady's managing agent, and had a spare key sent to me with just enough time to get back in before the actors arrived.

As it has been many years since I last used one, I should hardly be surprised that then are no longer any public telephones near my house. The last one standing has just been turn into a "mini community library": any passer-by can "borrow" a book from its shelves return it later, or replace it with another title from their own collection.

For a few months after the "library" opened, I didn't bother taking a look, as I had assumed that it would be stuffed full of cheese love stories. Then I noticed fork conducting spring cleans dropping boxes of voluminous books on various subjects there. And these books were free. This unbeatable price-point encouraged me to experiment with dozens of titles that I would never normally consider buying. And I've discovered some great books!

If I ever get trapped outside my house again, my local telephone box will, sadly no longer be able to connect me with my keys. But it can certainly keep me entertained while I wait for my wife to rescue me. 

There is no doubt that when you receive a compliment, you feel good and when you receive a criticism, you feel upset and want to refuse it.

You shouldn't be surprised by your reaction to the negative comment, as it's human's survival mechanism to avoid being criticized. Clearly, we don't want to be seen as failures, so we'd rather shut our eyes and cover our ears than have to take any criticisms from others.

Imagine you're learning to play the guitar, and you have just done your first public performance. Your teacher says, "You did well," which may not be as useful in helping you improve your performance skills as "Your timing needs some work." So I believe that criticisms are better than compliments.

No one would argue that healthy nutrition is a bad thing. However, too much food or drink — no matter how healthy they may be — can make us ill. Too many compliments take us away from our original enthusiasm of enjoying an activity. We start doing the activity only for the sake of receiving self-satisfying praise. Without the expectation of praise, our enthusiasm to complete things begins to be lost.

Launched in 2010, Microsoft KIN only lasted on the market for 48 days. It was very obvious that most 15 to 30-year-olds preferred Androids, BlackBerrys and iPhones to the Microsoft KIN. If criticism and feedback from the target group had been received while the phone was in development, Microsoft KIN could have avoided the huge embarrassment and its final failure.

Just to be clear, I'm talking about constructive criticism, which I like to think of as "healthy criticism". The right kind of criticism is honest feedback that will benefit you. Feedback forces you to reconsider your actions and the way you work. If you use constructive criticism wisely, it can guide you away from bad practices, giving you support and courage to move forward to be a better person in the future.