It is the song "The Original Scenery of My Hometown".

"Original Scenery of My Hometown", formerly known as "Original Scenery of the Old Country", is a piece by the Japanese ocarina master Sojiro. The song is pure music. It was used as the flute sound for Zeng Rou in TVB's "The Deer and the Cauldron" (Jordan Chan version); it was also used as the background music of the radio drama "Step by Step" in "The Legend of the Condor Heroes" (Louis Koo's version) .

The music was used in the first trailer of "A Dream of Red Mansions" directed by Li Shaohong in 2008, and also in the 2012 hit TV series "Beijing Love Story". This background music appeared in Shen Bing's hometown town in Yunnan. The ocarina "Original Scenery of My Hometown" was also used as background music in the "Chibi Maruko-chan" cartoon.

Extended information:

"Original Scenery of Hometown" is composed by Soujiro and included in the album "Bidoo".

Other versions:

1. Xu Guangzhong's version of "The Original Scenery of Hometown" is a song composed by Soujiro, lyrics written by Xu Guangzhong, and sung by Xu Guangzhong. A twelve-hole ocarina in C is used in the song.

2. The autumn evening version of "Original Scenery of Hometown" is a song composed by Soujiro, lyrics written by Hayashiki Kiun, and sung by Hayashiki Kiun.

3. Zhang Guoxian's version of "Original Scenery of Hometown" is a song composed by Sojiro, lyrics written by Zhang Guoxian, and sung by Zhang Guoxian.