Secret Garden (秘密花园) is a Singaporean drama which aired on Mediacorp Channel U (Singapore).
From Mediacorp: Cao Qi Ming (Tender Huang), aka Dr Beng, is an unconventional psychiatrist who specializes in treating children and young people.
Dr Beng is a squatter at his ex-schoolmate, Swan’s (Yvonne Lim) clinic.
Initially disagreeable of his method, she changes her mind when she sees his effective way of treating the patients.
Dr Beng has been searching relentlessly for the culprit of an accident that killed his twin brother 18 years ago.