first ,we should be polite and friendly to everyone,and we shouldn't say the impolite words to others .because as a volunteer ,our words stand for our country's behaviors.
Second,we should do our works wholeheartedly.and we should know what responsbilities we have .so that,we will do everything we can to help others.
Third,we can tell chinese atient stories and chinese troditional history to the foriengers.in this way ,we can make our cultures more widely known by the people from all over the world.
Finally ,the most important thing is that we shouldn't say the words which is bad for our mother country.