1 sentence

1. 如果你写的是一封商业或者其他正式信件，那就直入主题。

   rú​guǒ nǐ xiě de shì yī fēng shāng​yè huò​zhě qí​tā zhèng​shì xìn​jiàn, nà jiù zhí rù zhǔ​tí.

   If you're writing a business or other formal letter, get straight to the point.

   Source: CCMatrix