A debtor was left 'numb' when two strangers attacked him with knives and chopped off his arm with a single blow, a jury heard yesterday. 'I lost my ability to feel. I could not think of anything. My eyes were open, but I could not feel anything,' Wong Wai-lun, 24, said. The attack lasted only 20 to 30 seconds but during that time Mr Wong also suffered injuries to his ear, chest, shoulder, thigh, leg and hand. Mr Wong said he was set upon without warning early on June 3, 1996, while working at a food stall in Soy Street, Mongkok. 'The two men produced knives from behind them and began chopping,' he told the jury. 'As soon as I was chopped I got to my feet to escape. I felt numb because the first blow chopped off my arm.' Mr Wong said the attackers were armed with knives which had blades about 40cm long. Leung Chi-kit, 25, a cook, pleaded not guilty to wounding Mr Wong with the intention of causing him serious harm. Prosecutor Michael Arthur said Leung did not wield one of the knives but was responsible for setting the two attackers on to the victim. Mr Wong owed $30,000 at the time of the chopping. The victim saw a group of men near his stall about 90 minutes before the attack began, the court heard. He later saw Leung, nicknamed '46', walking towards his stall with two men. Mr Arthur said Leung pointed at Mr Wong and said: 'That's him.' The other two men then produced knives and launched the attack. There was a shout of 'repay the money', before they fled, Mr Arthur said. The Court of First Instance trial continues today.