Hongkonger Mandy was left devastated nine years ago when her eldest son died by suicide, finding herself trapped in a state of silent grief. “I kept asking myself why he chose this path. The son I knew was optimistic, adaptable, and appeared to be living a fruitful life whenever I visited him,” the 63-year-old said. Her son was 22 and in his fourth year of undergraduate studies at a university in Australia when he killed himself. The family only learned after his death that he had been seeing a...