To learn 伍思凱 - 一半 chords, anchor your practice on these foundational sequence of chords - D, A, F#m, Bm, E, D, C#m, D, E, A, F#m, D, A and E. I suggest starting at a calm pace of 48 BPM, and as you gain confidence, approach the song's BPM of 96. With A Major as the song's key, tweak the capo to cater to your vocal pitch and chord likes.