A TEENAGER took part in seven holdups in less than five months and made off with more than $360,000 in cash and valuables, the High Court heard yesterday. In one of the robberies, a customer of a karaoke lounge was accused of staring at a gang member and was slashed with a knife on the hand and forehead, the court was told. Lee Chi-wai, 18, had admitted six counts of robbery, one of attempted robbery and one of wounding. Because he was only 17 years old at the time of the offences, Deputy Judge Daniell adjourned sentencing for a training centre report. According to the agreed facts read out by prosecuting counsel William Lam, the eight offences occurred between December 23, 1992, and May 2 last year in locations that included Tsim Sha Tsui, Wan Chai and Western. Six of the offences took place in hair salons and one in a karaoke lounge. On each occasion, Lee and two to five accomplices posed as customers and entered the premises before producing knives and declaring robbery. Staff and customers were tied up. The gang made away with a total of $365,273 in cash and valuables from six robberies. However, when Lee and two other men tried to hold up a hair salon on May 2 last year a hairdresser managed to run out and shout for help. The gang was forced to flee before a robbery could take place. Lee received a total of $36,500 from the robberies.