A powerful clan let an elderly farmer use their land for $1,500 worth of wheat a year - only to discover that he was making a small fortune renting it out as a dump site, the High Court heard yesterday. Members of the Hau Hin Fat Neung clan were shocked to discover that the Metal Engineering company was paying their 'tenant' $13,000 a month to let it use their property as a disposal site. They had believed that 70-year-old Leung Kau was raising pigs and growing vegetables on the 10,000-square-foot property near Ku Tong village, Sheung Shui. Each year, the farmer gave the Haus $1,500 worth of wheat, Lawyer George Chu, for the clan, told the court. Metal Engineering proprietor Ip Wing-fai said he had no idea Mr Leung was not the land's rightful owner. The documents he signed made no mention of the clan to whom the New Territories land was registered, Mr Ip testified. The Haus were said to have learned of Mr Leung's business venture when a family member strolled past the site and came across a Metal Engineering sign. The Hau clan, or 'tong', took the farmer and his family to the High Court in a bid to evict them from the plot. But Mr Leung claimed the land was rightfully his. He said he had lived there since 1959, growing crops and raising pigs. Under Hong Kong law, anyone occupying a site undisturbed for 20 years or more became the rightful owner, lawyer Kenneth Chan, for Leung, said. The elderly farmer denied ever having paid rent on the property. The case continues before Deputy Judge Robin Peard.