Different countries have different customs in giving presents. In China you must never give a clock to a Chinese person, because the pronunciation of the word for "clock" in Chinese is similar to the pronunciation of "death". Also, don't wrap (用……包裹) a present in white, black, or blue paper, because they are the colors for funerals (葬礼). Don't give a knife, because something sharp can cut a friendship.
In Russia if you give flowers as presents, you have to give an odd number of them (One, Three, five, etc. ) because even numbers of flowers are for funerals.
In Germany if you are invited to dinner, flowers are good presents to take to your dinner hostess (女主人), but don't take her red roses because it means you are in love with her. Don't take thirteen of anything because it's an unlucky number. Don't take an even number of anything, either. Don't wrap your presents in white, brown, or black paper.
