Two failed marriages, two suicide attempts and years of trying to conform to a macho culture have taken their toll.
'People think it is just a perversion of the mind, but it's much, much more complicated than that,' says Fion of growing up with a gender identity crisis in a traditional Chinese family.
'People sometimes question why I joined the police when I knew about my condition. But I came from a poor background with a burning desire to succeed. When I left school the police was a very attractive option and an opportunity to excel.'
Fion joined the force in 1981, and was soon tipped to be fast-tracked to the rank of inspector. On the surface his private life also seemed to be thriving. He married in the mid-1980s and even considered having children.
'I didn't really want to go through with the first marriage, but I was scared and confused. I wanted to please my family. I thought I could overcome my illness.'
Depression struck towards the end of the 1980s.
His marriage broke up and he tried to kill himself by taking a drug overdose.
