For example, in both western culture and China culture, dear expresses love for the person you like, but in China, "dear" is generally a title for a lover or wife. West Renye Fang can use "dear" to express respect for each other, and generally begins with "dear" in the title.
Another example is "birthday party". "Birthday party is very popular in Britain and America, which means that good friends get together, eat birthday cakes, exchange small gifts and arrange some entertainment activities, such as dances, cocktail parties, barbecues, picnics and so on. However, it is not very common to hold parties on birthdays in China. Most of them are adults celebrating the whole 10 birthday (such as 20th, 30th, 40th, etc.), and friends and relatives have dinner together.