To international students, PLEASE PLEASE PLEASE keep these unintended consequences in mind when you choose to speak in Chinese in the building. I have no idea how hard it has been and still is for you to come to the US and have to learn in a non-native language. As such, I have the upmost (sic) respect for what you are doing. That being said, I encourage you to commit to using English 100% of the time when you are in Hock or any other professional setting