Can someone tell me what is this song ?

Hello, I don't know If I'm at the right place. I heard this song on a YT video, I'm not even sure it's chinese, (please correct me if I'm wrong!) but I really love it and can't find it by shazaming it.

Does anyone who speaks the language tell me if they recognize the song or if they can find it by tapping the lyrics on google ? Thank you very much !

https://youtu.be/gyyMwbpbpNA?t=25 

Thank you so so much !!!