No Sunny because if the people would care about that they would be capitalists but Mao teached them to not to be like that. :)

@chinafan, in fact we need to care about the amount......

@Sunny: Haha no problem. Just give to anyone just a very few money. Not the amount is important important is just the nice sign to them. :)

@chinafan, in most places of China, wedding is not for two families, but for all their friends, classmates, colleagues, neighbors..... Usually the guests need to prepare 红包 （some red pocket, like an envelope, with cash inside）. The couple or their two families will pay for wedding parties, but in fact they will get money from all guests. In the same way, when others get marries, they will also prepare 红包 to congrat. It is a bad custom somehow, if a few of my classmates get married in the same month, I will feel stressful since I may not have enough money to give them.

Oh I see now thank you very much for your nice explanation! I didn't knew that in Vietnam the people celebrate it also so big like that. You know I just wonder who is paying all this stuff because such a big wedding is unnatural here in my country if you do not have enough money.