This song by JJ Lin 林俊杰 is in G.
These are the “cheat” chords I played…
Part 1a: C/E - D/F# - G
Part 1b: C/E - D/F# - G
Part 1c: C/E - D/F# - G
Part 1d: C2 - D - Bm7 - Em7
Part 1e: Am7 - C2 - D - G
Part 1f: Am7 - C2 - D - G
Part 2a: C2 - D - Em7
Part 2b: C2 - D - G
Part 2c: C2 - D - Bm7 - Em7
Part 2d: Am7 - C2 - D
Part 3a: same as Part 2a
Part 3b: same as Part 2b
Part 3c: same as Part 2c
Part 3d: Am7 - C2 - D - G
Part 4a: Am7 - G/B - C2 - D - G
Part 4b: Am7 - G/B - C2 - D4 - D
