In the last episode of the TV series "The Best in the World", the background music of using the magical power of King Kong to fight against the afterlife is the music "Immortal Body" created by the Hong Kong music composer.

The following is the video link to watch the last episode of "Best in the World" online:

/ptv/vplay/3463867.html

In the 42nd minute of the video, you can hear the background music "Immortal Body" when Cheng fights God Hou.

If you are interested in this song, you can search for "immortal body" on some music platforms or online music stores, and there may be related resources. Besides, if you like the original music of TV series, you can also search other works by Lincoln Lo.