A jilted woman climbed down a drainpipe from the roof of a nine-storey building, broke into her ex-boyfriend's flat and demanded a reunion at knifepoint, a court heard. Terry Chan Tat-fu, 28, awoke on feeling something touch his neck and found Berry Chan Sau-har, 25, holding a knife to it, the District Court was told yesterday. Chan had shinned down from the roof with the help of a rope and dismantled the window grille of the Cheung Sha Wan flat with a screwdriver, Public Prosecutor Winnie Mok Wan-yin said. The shocked man, holder of a black belt in tae kwon do, restrained the woman, suffering a bite and a mild abrasion to his neck in the process. Berry Chan, a cooking teacher, went on trial yesterday after pleading not guilty to aggravated burglary. The prosecution rejected her offer to plead guilty to possession of an offensive weapon instead. The court heard that the pair met at their workplace and developed a relationship but Terry Chan walked out of it about half a year later because he was strained by the woman's jealousy about a former girlfriend and her irrational behaviour. He told the court that since the break-up she had telephoned him from time to time seeking a reconciliation because she wanted to set up a family for her five-year-old from a previous marriage. But he refused all requests for a meeting or reunion. At about 7.45am on December 23 last year, he awoke to find his ex-girlfriend, wearing a wig, gloves and a black outfit, holding a knife at his neck. She urged him to get back together but he did not reply. Seeing her waving the knife in her right hand, he pinned the hand to the mattress and she lost her grip on the knife. During the struggle, the defendant bit his right arm. He was taken to hospital where he received treatment to the abrasion to his neck. He said Berry Chan had twice attempted to kill herself after disputes with him. On one occasion she cut her wrist before drinking Dettol antiseptic liquid. On another, she tried to jump from the top floor of a building. He stopped her and she was later admitted to a psychiatric clinic. Defence lawyer Jonathan Acton-Bond suggested that after he refused a reconciliation on the day of the incident, Berry Chan threatened to killer herself and started counting down, but he said he could not recall it. He told the lawyer he did not know she suffered from schizophrenia. The trial continues today.