A pregnant woman rescued her two young sons from her sinking car yesterday after it skidded into a pond. Tang Pui-shan, 36, was driving her sons Liu Chak-kiu, three, and Liu Look-kiu, seven, to school from Tin San Tsuen when the car skidded on a muddy patch near Kam Tin, Yuen Long, at about 8am. It flipped over into the pond where it began to sink in water 1.5 metres deep. Although the windows were closed, water began seeping into the vehicle. Look-kiu, who was in the rear passenger seat, undid his seat belt and climbed into the front to help his mother force open the driver's door. The woman, who is four months pregnant, said she prayed for help before opening the door. 'Two-thirds of the car was underwater by this time,' she said. 'I first helped my eldest son get out and helped him climb on to part of the car that was out of the water. Then I climbed back in, unfastened my three-year-old from his baby seat, and climbed out with him.' Villagers Chan Tin-yip, 57, and Cheung Mou, 61, brought a wooden ladder and helped the three to climb to safety. The family had returned to their nearby home before firefighters and police arrived to help. They were taken to Pok Oi Hospital and were discharged after a check-up.