After the near approach of Chinese warships recently I was inspired to try learning Mandarin.
After watching some introductory videos and signing up for an inexpensive (with coupon) Udemy course I'm now also going to sign up to the free Mandarin Blueprint Challenge.
It all looks interesting. 你好

加油! jiā yóu. Literally “add oil” and can be used as a sort of “come on”, “you can do this” motivational phrase. Very multipurpose!