AN unemployed man who robbed a woman at knifepoint in a lift was yesterday sentenced to 61/2 years' jail by the High Court. Deputy Judge Evans ordered 31/2 years of the penalty to run consecutively with a 61/2-year term Lau Kim-hing was already serving for robbery. He staged the attack while awaiting trial for a similar offence. The judge noted that Lau, 26, had three previous convictions of robbery and one of conspiracy to rob. Lau had denied robbing Yu But-cheung of a watch and wounding her on April 16, 1991, but was found guilty after trial by a jury. Ms Yu was on her way to her Mei Foo Sun Chuen home when Lau confronted her in the lift. He threatened her with the knife, which he then put away. But when Ms Yu tried to escape, Lau pulled her back and brought the knife out. They struggled and Ms Yu's chin was cut. Lau's counsel, Petrus Chan, said the victim had suffered no permanent injuries and asked for a concurrent sentence.