"I am sorry. it wasn't my intension" is the ultimate sentence you have to learn in Chinese. The reason is pretty simple: by mastering this sentence, you can cover yourself up if you have done something that is miss taken by someone else in China. So you can stop worrying about what you are doing and any other concerns, and totally focus on the fun! :D If this sounds like an exciting idea, then you got to watch the video and learn this sentence! Cheers!