Culture shock

I consider culture shock as a culture phenomena.It exists in everywhere especially when you go to a new country,it means you will meet a new culture style and have to adapt it.
When I came to London,Culture shock existed everywhere in my daily life.First of all,food was worried me a lot.At first,I felt strange that self-help was used in most restaurants in London.It means after you paid your meal,you must get the spice or napkin by your self,because there were few waiters in the restaurant in London.If this happened in china,people will crazy because they usually accustom to be served.
I have thought about it for a long time and finally got a answer.It depends on the actual situation in every country.China have large population and have to solve the employment problem.So it will have more occupation in the restaurant.
Secondly,China have the different shopping habit from Western countries.For example,if you go to a supermarket and you buy 4.2 pounds goods.If you do not have exactly change,In China people will give the waiter 5 pounds and try to find another 0.2 pounds wish to get 1 pound return,it is pleased to each other.But it is oppsite in Britain,British will not receive your 0.2 pounds and it seems pleased to them to give your 0.8 return.
Lastly,I think it is more difficult to make friends in Britain than in China.In China you can make friends with someone just use 10 minutes.You drink,you talk the same topic,and you have knowledge with each other and you make friends.British usually look guard,they often spend more than 10 minutes to get along with someone.
Culture shork is a so long topic and we need to find the interesting between them.