A computer expert was duped into paying $900,000 in cash for boxes of scrap paper, a court heard yesterday. Wong Sio-peng, the owner of a Mongkok computer store, was offered computer parts at a bargain price in September last year by a man who strolled into his shop, the District Court heard. Kong Ming-chun, 22, showed Mr Wong his merchandise and left it with him to test. Kong returned three days later with a friend called 'Joe' and negotiated to sell 22,000 parts to Mr Wong for $1.1 million, the court heard. On September 16, Mr Wong, carrying $900,000 in cash met Kong and Joe in Kowloon Bay. The six boxes of 'computer parts' were loaded into a van and taken to a storage spot and Mr Wong handed over the cash to Joe. The rest of the money was supposed to come from a friend of Mr Wong's but he failed to show up. Later Mr Wong discovered the boxes were filled with scrap paper. Mr Wong tracked Kong down, but Kong stalled for time and told Mr Wong he could locate Joe who he claimed had the money. As a show of good faith he gave Mr Wong $20,000. Mr Wong became suspicious when he had not heard from Kong over the next four days. He told the police and Kong was picked up at Kai Tak on his return from Thailand. Joe was never seen again. Kong, who pleaded guilty to conspiracy to defraud, will appear again before Judge Richard Hawkes on May 8 for sentencing.