How To Write Address On Package To China . The second line contains the apartment or house number and street name. Mainland china uses six digit codes. How to Write a Formal Email in Chinese from www.yoyochinese.com Business's name (if applicable) street address (with apartment or suite number) city, state and zip code (on the same line)*. For a few large cities (beijing, shanghai, tianjian, chongking) the city is also the province. Do not use commas or periods.