How To Write A Letter In Mandarin . Keep formal within the main body of the email and address the topic of your letter. It should almost sound like the s in vision, but closer to r. Learn the Mandarin Chinese for You and I in this post Chinese from www.pinterest.ca (you can even purchase yoyo chinese courses with wechat!). Your email address will not be published. 发短信 (fāduǎnxìn) send a text message.