With technology developing,some advanced tools which the new ways to advertise depend on  have been created such as television, radio and computer. Therefore it is more efficient and convenient for people to know about new products and new conceptions. Hence advertising is increasingly becoming a important part in our lives,and we can know more about a country from advertising.    In my opinion, advertising is an approach to let people know about the product's function and price.Companies can make their brands famous and improve their income. This kind of advertising is called commercial advertising. The other kind of advertising is nonprofit.It usually is made by government to call on everybody protecting environment,no smoking and so on. It will infuse a conception into your brain to make people love earth and family.From these two types of advertising,we can know about a country roughly.  For one thing,from food advertising,we can learn about the diet habit of a country, for instance,the dumpling advertising will enable companies to make a lot of money in China,because Chinese people love dumplings which are the China's traditional food very much. However,it maybe not popular with American since they do not know the dumplings even have not seen this kind of food.  For the other thing, from nonprofit advertising, we can know about a country's environment. Government often design some advertising in order to attract more tourists to have a vacation in their country. The advertising tell people where the most beautiful place is and what the most funny thing is. Besides,the advertising can let you know about the  national culture such as the most famous book and the most old opera.   Admittedly,some advertising which does not have some meaning can make people disgust.Some advertising is always played again and again. We can not know a country from this kind of advertising.However,the advertising will be deleted as soon as possible.Therefore,we can benefit from advertising a lot.  To conclude,advertising can tell us a lot about country,if you want to go to a country,before doing this，the best way to know about country is watching advertising.