This video: https://youtu.be/BuAULI7PbRw?t=7
They are obviously Asian, and I seem to recognize some of the letters as being Chinese. Also, the song itself seems to be a famous/classic Chinese song which I've heard in other contexts as well.
However, there is also a "Romanized" or "Latinized" text above the Chinese (?) text, which confuses me.
Also, the video description contains a .my link, which is the TLD for Malaysia.
So, are they Malaysian or Chinese? And if they are Malaysian, why are they singing a Chinese song in Chinese?
Bonus points if you can tell me where and when they recorded the video.