Dear: The name of the background music is:

Li Yundi

-

Ludwig

van

Beethoven:

Piano

Sonata

No.14

in

C

sharp

minor

Op.27

No.2

'Moonlight'

_I

Andante

sostenut (pure music version)

I hope this answer can be helpful to you, and I hope you can treat me with "honesty" The answer will be adopted promptly. Thank you in advance!