A good joke can be the hardest thing to understand when people are studying a foreign language. As a recent article in The Guardian noted, “There’s more to understanding a joke in a foreign language than understanding vocabulary and grammar.”

Being able to understand local jokes is often seen as an unbelievable icebreaker for a language learner eager to form friendships with native speakers. “I always felt that humor was a ceiling that I could never break through,” Hannah Ashley, a public relations account manager in London, who once studied Spanish in Madrid, told The Guardian. “I could never speak to people on the same level as I would speak to a native English speaker. I almost came across as quite a boring person because all I could talk about was facts.”

In fact, most of the time, jokes are only funny for people who share a cultural background or understand humor in the same way. Chinese-American comedian Joe Wong found this out first-hand. He had achieved huge success in the US, but when he returned to China in 2008 for his first live show in Beijing, he discovered that people didn't think his Chinese jokes were as funny as his English ones.

In Australia, meanwhile many foreigners find understanding jokes about sports to be the biggest headache. “The hardest jokes are related to rugby because I know nothing about rugby,” said Melody Cao, who was once a student in Australia. “When I heard jokes I didn’t get, I just laughed along.”

In the other two major English-speaking countries, the sense of humor is also different. British comedian Simon Pegg believes that while British people use irony(反话)——basically, saying something they don’t mean to make a joke—every day, people in the US don't see the point of using it so often. “British jokes tend to be more subtle and dark, while American jokes are more obvious with their meanings, a bit like Americans themselves,” he wrote in The Guardian.

Language gives us the power to describe countless actions, properties and relations that compose our experiences, real or imagined. As for how languages were created, scientists found iconicity might play a key role.

People can’t bridge language gap and understand each other without iconicity. When playing a game of charades (猜字谜) , we act out our meaning, using our hands and bodies to describe the sizes and shapes of objects. The key to this process of forming new symbols is the use of iconicity. Not limited to gesturing, iconicity appears in our visual communication too. Traffic signs, food packaging, maps. . . wherever there are people communicating, you will find iconicity.

According to our research, iconicity might also exist in our voices. We organized a contest in which we invited contestants to record a set of sounds to express different meanings. The winner of the contest was determined by how well listeners could guess the intended meanings of the sounds based on a set of written options. Critically, the sounds that contestants submitted couldn’t include actual words or onomatopoeias (拟声词) .

Listeners were remarkably good at interpreting the meanings of the sounds. Yet, all of the contestants and listeners were speakers of English. Thus, it was possible that listeners’ success relied on some cultural knowledge that they shared with the speakers. Did the listeners also understand the speakers from completely different cultural backgrounds?

Later, an Internet survey translated into 25 different languages was carried out. Participants listened to each sound from the English speakers and guessed the meaning by choosing from six written words. Guessing accuracy for the different groups ranged from 74 percent for English speakers to 34 percent for Portuguese speakers. It is far from perfect, but well above the chance rate of eight percent expected by us.

Taken together, these studies show that our capacity for iconic communication has played a critical role. Without this special talent, language would likely never have gotten off the ground.

China's hot word, tuhao, may be in Oxford English Dictionary.

​In Chinese, tu means rude and hao means rich. In recent years, people use this term to describe those who spend money in an unreasonable way. The word became more popular with Apple's gold-colored iPhone, which is loved by China’s rich people. The color became known as “tuhao golden”. The word is now often used to refer to people who have money but lack taste.

​There are two other Chinese hot words: dama and No Zuo No Die, which may also be taken in the dictionary. Dama, meaning middle-aged women, was first used in the Western media by the Wall Street Journal. Thousands of Chinese women were buying a large amount of gold when the gold price had gone down. Another phrase No Zuo No Die, meaning if you don't do stupid things, they won't come back to bite you, is also very popular. Other words, such as Maotai, Chinglish and dim sum have also been included in the dictionary.

​BBC World News recently made a special program called “Tuhao, let’s be friends!”“ The frequent use of Chinglish by foreign media suggests that foreign people are looking more to the lifestyle and popular culture of China,” says Zhang Yiwu, professor of Beijing University.

​What does this trend suggest about the Chinese language’s influence?

​Xing Hongbing, a professor from Beijing Language and Culture University (BLCU) said “These show that Chinglish is now being accepted by the rest of the world and they play important roles in daily life of Chinese. Behind these Chinglish words and phrases are the Chinese culture. They are reflections of the changes and trends in the Chinese society and they help people from other countries to understand what’s happening in China.”