A bulldozer demolishes the "nail house" in the center of a 10-meter-deep pit dug by the real estate developer in Southwest China's Chongqing Municipality on the evening of April 2, 2007. Wu Ping and Yang Wu, the owner of the only two-story brick building, left their house on Monday afternoon after reaching an agreement over the compensation with the developer through six times of mediation of local court, local media reported. [newsphoto]