Gratuity is customary in this money-mad metropolis.
在这个金钱至上的大都市里，给小费是司空见惯的。
2
You: in China during Spring Festival, it's customary for relative to give younger children money.
中国春节有个习俗，亲戚要给小孩子压岁钱。
3
At the end of each lunar year, it is customary in China to give children hong bao -- small sums of money in envelopes that are red, the colour of prosperity.