Chan Wing-hong, 38, who stands only 4-foot-6, said the five weeks he dated prostitute Chow Mei-hing were the happiest of his life but Chow's interest waned when Chan ran out of money to spend on her.
"She said, 'You bloody dwarf. I see no reason that I like you'," Chan told the court on Thursday. "I was very disappointed."
Chan, an electrician, said he spent all his money on the bar hostess because she was his "first girlfriend."
But after she insulted him, he snatched a knife and plunged it into her heart. He then dismembered her, wrapping her head in newspaper and dumping it in a wooded area and leaving other body parts in rubbish bins.