A MERCHANT who attacked a fellow trader with a hammer over a business debt was found guilty by a High Court jury yesterday. Leung Che-chung, 30, was convicted of wounding Siu Sang-wah, 29. The victim was struck on the head more than 10 times. A co-accused, Ng Kwok-chiu, 22, who also denied a wounding charge, was acquitted. Prosecutor Yasmin Mahomed told the court Leung had known Mr Siu since 1987, when they worked in a Kwai Chung factory. Last year, they started businesses, with Leung ordering electric circuit boards from Mr Siu. In June last year, Leung ordered goods worth $200,000 but had not settled the payment. On July 25, Leung brought Mr Siu to his Shamshuipo office to pay his debt. After issuing a cheque of $30,000, a string was pulled around Mr Siu's neck and Leung struck him with a hammer. Mr Justice Gall adjourned sentencing until November 29 for psychiatric reports.