A naive taxi driver who 'believed in the essential goodness of his fellow man' wept yesterday as a passenger he had taken as his sworn son was convicted of swindling him out of $1 million. Cheng Siu-shing, 52, lost the taxi business he had spent most of his working life building as a result of the fraud. Deputy Judge Ian Candy described the father of three as an unsophisticated country person. 'It is not hard to imagine how a person like him would respond to friendship shown to him and reciprocate it to an even greater degree. He appears to me to be a person of more than the usual humanity,' the judge said. He added: 'If he appears naive, it is not as a result of ignorance or lack of intelligence but a naivete from his sense of trust and belief in the essential goodness of his fellow man.' Mr Cheng's fateful relationship with Wong Kin-tat, 30, began when Wong stepped into his taxi in 1991. They developed a friendship which blossomed into a close emotional bond and led to Wong becoming the driver's sworn son. He moved into Mr Cheng's family home in 1993 and the taxi driver's wife slept on the floor to accommodate him. In early 1994 Wong told him he was suffering from cancer. Mr Cheng wept and showed great sympathy. Wong later told him the condition was under control. When giving evidence, Mr Cheng said he had shown more concern for Wong than for his own children. The sting came when Wong told Mr Cheng he should pack up his taxi business and enter the property market to make more money. The judge said Wong begged Mr Cheng to invest $1 million in a flat he claimed to be buying in City Garden, North Point, saying: 'Father, save me.' Wong told the taxi driver all his cash was tied up in stocks and he would be sued if he did not go through with the purchase of the flat. Mr Cheng sold his treasured taxi licence to raise the money, which he paid into Wong's bank account. But the flat purchase was a sham and Mr Cheng was conned out of his money, the judge said. He found Wong guilty of securing the transfer of $1 million into his account by deception and remanded him for reports. After the District Court hearing, the taxi driver said his experience had shaken his trust in human nature.