A theme song from the movie: She Remembers, He Forgets (English) or That Day We Can Fly (Chinese). This song was recorded by Hong Kong born Feanna Wong when she was 14 years old in 2015.
The clip of an airplane landing in Kai Tak Airport reminds me of aircraft wing almost 'touching' the buildings as it lands.
There is no English caption for this video; but the visual does help a little.