Tonnes of relief materials are being ferried to Shaanxi province, where more than 250,000 people from the city of Weinan have been left homeless after the Wei river burst its banks following two weeks of torrential rain. Relief workers said delivery of the goods had been delayed by the poor condition of roads. Ernest Ng Kit, World Vision's area co-ordinator who is helping the relief work, said: 'All the farms we saw were submerged in water. And the roads were broken and ruined. 'Water is still waist-deep. 'Flood victims, in thin clothes, are living in makeshift shelters and are enduring evening temperatures of about 4 degrees Celsius. 'Because many roads are ruined, the distribution of the relief supplies will take a week or so,' he said. World Vision Hong Kong has allocated $400,000 for the relief operation and bought 1,800 quilts, 3,200 jackets and 3,200 pairs of shoes. On Thursday, the provincial government sent 500 tonnes of flour, 200 tonnes of oil and 2,000 boxes of bottled water to Weinan. It has also delivered 4,000 quilts, 500 jackets and 100,000 items of clothes from its warehouses to flood victims. The municipal government in Xian has sent relief materials worth about 300,000 yuan (HK$283,000) in addition to making a 300,000-yuan donation. Mr Ng said the food provided by the authorities would only last about a month. Torrential rain began falling in central and southern Shaanxi on August 24 and is forecast to continue for at least three days because of high pressure in the Pacific and the recent Typhoon Dujuan, according to Xu Xintian, of the Shaanxi Meteorological Observatory. The flooding, which is the most serious in Shaanxi province in four decades, has caused economic losses of nearly 4 billion yuan and affected 4.9 million people in 585 villages and 68 counties. At least 40 people have died and 34 are still missing.