There is an old saying help others, and you will be helped when you are in need. It\'s the experience of our forefathers, however, it is correct in many cases even today.

　　A number of factors are accountable for this old saying. one of the most common factor is that helping each other enables people to get work done easily and quickly.

　　For instance, if a student meets a difficult question about their major, he or she can seek help from fellow classmates, and it is clear this will save more time and energy to solve the problem. another contributing cause is that helping others makes people feel warm inside. you can just imagine that how warm it is when you get help in big cities like Beijing or shanghai without any relatives , which will quarantee people\'s relatives, which will guarantee people\'s mental health.

　　It can directly promote the rapid progress of the world and indirectly spurs continuous development of the individuals.

　　And eventually brings economic prosperity and social harmony.