Grandparents are respected in many human societies. But telling stories about old times and overfeeding grandchildren seem like human qualities. Are these classic grandparent behaviors really limited to humans?

Do any animals know their grandparents the way people do?

For most species on Earth, the answer is certainly " No" . " Usually, there aren't grandparents around anymore when an animal is born,"  said Mirkka Lahdenpera, a biologist at the University of Turku in Finland. " Even if an animal's life span does overlap (重叠) with its grandparents', most species spread out to avoid competing for resources, so the chance of running into a grandparent is slim." 

But there are a few clear exceptions, primarily among mammals (哺乳动物) that live in close social groups. In troops of langur monkeys in India, older females lived together with their daughters and grandchildren. The grandmother langurs defend the group's babies against attacks and even give their own grandchildren special treatment.

Many whale species, too, travel in family groups that include both grandmothers and grandchildren.

Elephant herds are also famously matriarchal. They are led by a grandmother, who can live to around 80 years old, and are generally made up of her daughters and their young. The females in a herd form close bonds and work together to raise their young.

Lahdenper found that the babies of young mothers were eight times more likely to survive if their grandmothers lived near them than if they didn't. When the young mothers were older and more experienced at raising babies, this beneficial grandmother effect disappeared even if the actual grandmothers were still around.

Indeed, most evidence for the benefits of grand parenting comes from mammals. But in 2010, researchers found that in troops of insects called gall-forming aphids, older females defend their relatives after they've stopped reproducing (繁殖).

And what about grandfathers? Studies of humans in recent decades have shown that a living grandfather can improve a person's mental health and other indicators of well-being. But there's no evidence of that in the animal kingdom. Male animals rarely socialize with their own children, let alone any grandchildren.

Food and festivals are important parts of Chinese culture. Here is some lucky food in different festivals. 

In China, the 12th month of the lunar calendar (阴历) is called Layue. The month is full of interesting festivals and customs.

Laba Festival, which is on the 8th day of Layue, is the first festival in this month. From this day on, people begin to get ready for the Chinese New Year.

On Laba Festival, people eat hot Laba porridge (腊八粥). There are usually eight things in the porridge: rice, red beans, peas, dried lotus seeds, dates, and three different kinds of fruits and nuts. The porridge is not just good for your health, but a blessing for the coming of the Chinese New Year.

Laba porridge is not the only tasty food in Layue. Laba garlic (腊八蒜) is popular in the north. People begin to soak (浸泡) the garlic in vinegar from that day on, and eat it with dumplings during the Chinese New Year. While in the south, people like making sausages (腊肠).

Another major celebration before the Spring Festival is Xiaonian. It is usually on the 23rd or 24th day of the last lunar month. Traditionally, it is an important day when people offer sacrifices to the Kitchen God who looks after the family.

Don't forget to clean your home. This is also an important thing to do to prepare for the Chinese New Year. It means sweeping away the dust of the old year and welcoming a fresh start. Now, the last thing for you to do is to wait for the coming Spring Festival.

Most students wear school uniforms when they go to class every day. In England, students have to wear a school uniform.

What do English students usually wear? Each school has a different uniform: the school can choose its own uniform. Usually, girls have to wear a blouse, a jumper and a jacket, a skirt, tights(连裤袜) and flat shoes(平底鞋). Boys must wear a shirt, a jumper, a jacket, trousers, socks and flat shoes.

How much is the school uniform? The school uniform mustn't cost too much so that all parents can buy it. Children from poor families wear the same clothes as children from rich families. The usual cost of a uniform is about €183.

What are the rules of wearing school uniforms? All students from Year I to Year 11 must wear a uniform and can be punished(惩罚) if they don't follow the rules. Only Year 12 and Year13 students don't have to wear uniforms: they can wear their own clothes.

People in Taiwan province show their special love for night markets. Full of stalls (货摊) and shops, Taiwan night markets are popular among tourists and locals. Taiwan's most famous night market, Shilin Night Market, along Keelung River, has welcomed visitors since 1909 in Taipei.

There are many activities to do at Shilin Night Market. Walking into it, it's easy to get lots of street food to taste. However, there's more than food that people can enjoy. Here people can find all kinds of goods (商品) like handicrafts and fashionable clothing. Besides, there are cultural shows such as dragon dance. At the same time, people can easily find stalls for fun games like the shooting game.

The culture of many Asian cities is enjoyed in night markets. There are exciting night markets not only in Taiwan, but also in other Asian areas. At Hoi An Night Market in Vietnam, hundreds of silk lanterns are on to keep streets bright. In Singapore's Bugis Street Night Market, over 800 stalls are for selling beautiful and cheap clothes. Angkor Night Market in Cambodia is famous for local crafts like china bowls.

Over the years, the offerings have been enlarged from food to goods of all kinds in night markets. The colorful displays and loud music make night markets livelier. They help create(创造) an enjoyable atmosphere (氛围). So look around, why sit at home on an evening when you can have a ball at a night market in your city? Let's enjoy the pleasure from night markets!