A HAWKER who attacked his ''ungrateful'' ex-lover with a chopper and threatened her with a gun was jailed for 61/2 years yesterday. Tsoi Chiu-kin was acquitted on August 3 of attempted murder but was found guilty by a jury of wounding 33-year-old Wan Siu-ying. He had denied the charges. Tsoi, 42, had admitted possessing a pistol and eight rounds of ammunition. Two police officers who confronted him were yesterday commended by the judge for bravery. Passing sentence in the High Court, Mr Justice Bewley said Tsoi had previously treated Ms Wan generously and had tried to lead her away from her life as a masseuse but she had been ungrateful. He said it was difficult to decide on a proper penalty. He would sentence the defendant on the basis that Tsoi had reached the end of his tether when she, and the ''muscle'' of the triad society friends she had brought along, demanded money. Tsoi decided to teach her a lesson but lost his temper and injured her badly, said the judge. He agreed there was significant mitigation. The prosecution said Ms Wan had a criminal record including convictions for drugs and prostitution. Prosecutor Barry Moorfoot said the couple used to live together in a Hunghom flat but Tsoi moved out after they had an argument. On August 17 last year, the landlord contacted Tsoi, saying he wanted to evict Ms Wan. As a result, he returned and changed the locks to keep her out. They met later that evening to talk things over. Ms Wan came with two male friends with triad backgrounds and they beat him up. The following day, Ms Wan, with three men, went to see Tsoi in the flat after demanding money. However, he only let her in. It was the Crown's case that Tsoi then pointed a pistol at her and pulled the trigger but the gun jammed. Tsoi claimed he did not aim the gun at Ms Wan but pointed it at the floor to scare her. He then fetched a chopper and cut Ms Wan several times on her head and body. Constable Lam Yuk-shan and Constable Ma Pan-leung were alerted about the attack. They rushed to the scene and managed to subdue Tsoi, who still had the pistol with him. Duncan Percy, defending, said his client was clearly a man with a hard-working background. Tsoi had tried to help Ms Wan make a clean break from her way of life.