Kataria is the founder of the worldwide laughter movement. The celebration of World Laughter Day is a positive activity for world peace and is to build up a global sense of brotherhood and friendship through laughter. The first “World Laughter Day” gathering（集会）took place in Mumbai, India, on 11th January 1998. 12, 000 members from India and international Laughter Clubs attended it. Now there are about 5, 000 Laughter Clubs worldwide on all 5 continents.

    “HAPPY-DEMIC” was the first World Laughter Day gathering outside India. It took place on 9th January 2000 in Copenhagen, Denmark. “World Laughter Day” is now organized on the first Sunday of May every year. Hundreds of people gather worldwide on that day to laugh together.

    Today, the world has never faced so much unrest（动荡）before. People are at war within themselves. Laughter is a universal language, which has the ability to unite humanity without religion（宗教）. Laughter can build a common connection between various religions and create a new world order. So we believe that laughter and only laughter can unite the world, building up a global sense of brotherhood and friendship.

    Studies also say that laughter helps your body do the following: lower blood pressure; reduce stress; work out the heart, especially for those who are unable to perform physical exercise. So in life, when you can laugh, you should laugh loudly and with your entire body—because it's good for you.

Here are four clothing stores.

Notes: £ means the cheapest; £ £ £ £ means the most expensive;

★ means friendly; ★★★★ means the friendliest

Every school day, we use schoolbags to carry all of our things to school. They are a big part of our lives. But have you ever thought about the history of the schoolbag?'. 

In the Han Dynasty（汉朝）, students in old - style private schools used bamboo boxes to carry books to school. People consider the bamboo boxes to be the earliest schoolbags. There were usually two or three layers（层）in the box. Kids put different things like books, brushes, ink stones（砚）and paper in the boxes. 

Hundreds of years later, people developed a new kind of schoolbag called the budai, or the " hip - pocket ". The budai was lighter than the bamboo box. With the founding (成立) of the People's Republic of China, military rucksacks（军用背包 )became popular. Many people carried them when they were in school. Ask your grandparents or parents about these bags. Maybe they can tell you about their experiences of carrying them when they were in school. 

A new style of schoolbags has appeared in recent years. Many of them have colorful and fashionable designs（时尚的设计） on them, such as pictures of cartoons or pop stars. And they are more comfortable to use. Some students pull wheeled bags filled with heavy textbooks and others carry backpacks. 

Schoolbags are still changing. Can you imagine what future schoolbags will be like?