What's the name of the next background music about Infernal Affairs from the rooftop?

The background music of Infernal Affairs' Song from the Rooftop is called White Stone, which is pure music without lyrics.

Song: Baishi

Singer: Mysterious Garden

Lyrics: Mysterious Garden

Composer: Mysterious Garden

Album: White Stone

Type: accompaniment/pure music

Windancer begins with a plucked instrument with mysterious timbre, and then blows out melodious melody with a flute. The melody of the flute is very ups and downs, like the fog in the valley sliding rapidly in the wind, and the magical plucked strings are still cooperating. In addition, the addition of electronic sound effects such as flowing water and faster melody has laid the extraordinary style of the whole music, which has both magical modernity and the simple essence of European folk songs. Then the oboe blows out the seemingly gently rotating theme, and the gentle oboe playing and wave after wave of accompaniment melody indicate that the real theme is coming. Sure enough, the violin's energetic theme and compact beat accompaniment appeared together, and the climax of the whole music and the passionate dance in the mountains and highlands officially began here. In this way, the enthusiasm of the couple continued until the end of the music. In the second half of the music, the violin and oboe are played together, even showing a tone similar to the Scottish bagpipes. The trumpet played in the second half of the music increases the strength and intensity of the music, as if injecting solemn national spirit into the music.