Zhang Tibing and his wife Wang Fengying pose for a photo in front of their dismantled house, which was built in 1997 at a cost of some 50,000 yuan (about 8,117 U.S. dollars), at Longmen Township in quake-hit Lushan County, southwest China's Sichuan Province, May 2, 2013. On high alert for secondary disasters, dilapidated houses were dismantled lately after a 7.0-magnitude quake hit Lushan on April 20.(Xinhua/Jin Liangkuai)

Yang Mingsheng (1st R) and his family pose for a photo in front of their dismantled house, where they have lived for more than 30 years, at Longmen Township in quake-hit Lushan County, southwest China's Sichuan Province, May 2, 2013. On high alert for secondary disasters, dilapidated houses were dismantled lately after a 7.0-magnitude quake hit Lushan on April 20.(Xinhua/Jin Liangkuai)

Zhang Qingyuan (1st R) and his family pose for a photo in front of their dismantled house, which was built in 2003 at a cost of some 100,000 yuan (about 16,234 U.S. dollars), at Longmen Township in quake-hit Lushan County, southwest China's Sichuan Province, May 2, 2013. On high alert for secondary disasters, dilapidated houses were dismantled lately after a 7.0-magnitude quake hit Lushan on April 20.(Xinhua/Jin Liangkuai)

Song Jianqiang and his wife Wang Guolan pose for a photo in front of their dismantled house, which was built in 1998 at a cost of some 60,000 yuan (about 9,740 U.S. dollars), at Longmen Township in quake-hit Lushan County, southwest China's Sichuan Province, May 2, 2013. On high alert for secondary disasters, dilapidated houses were dismantled lately after a 7.0-magnitude quake hit Lushan on April 20.(Xinhua/Jin Liangkuai)

Gao Yongwen (1st R) and his family pose for a photo in front of their dismantled house, where they have lived for more than 20 years, at Longmen Township in quake-hit Lushan County, southwest China's Sichuan Province, May 2, 2013. On high alert for secondary disasters, dilapidated houses were dismantled lately after a 7.0-magnitude quake hit Lushan on April 20.(Xinhua/Jin Liangkuai)

Chen Dingbin and his wife Wang Wenjin pose for a photo in front of their dismantled house, which was built in 1999 at a cost of some 40,000 yuan (about 6,494 U.S. dollars), at Longmen Township in quake-hit Lushan County, southwest China's Sichuan Province, May 2, 2013. On high alert for secondary disasters, dilapidated houses were dismantled lately after a 7.0-magnitude quake hit Lushan on April 20.(Xinhua/Jin Liangkuai)

Zhang Huaiqiang and his wife Yang Jiarong pose for a photo in front of their dismantled house, which was built in 2005 at a cost of some 150,000 yuan (about 24,351 U.S. dollars), at Longmen Township in quake-hit Lushan County, southwest China's Sichuan Province, May 2, 2013. On high alert for secondary disasters, dilapidated houses were dismantled lately after a 7.0-magnitude quake hit Lushan on April 20.(Xinhua/Jin Liangkuai)

Huang Wanyun (1st L) and his family pose for a photo in front of their dismantled house, which was built in 1998 at a cost of some 120,000 yuan (about 19,481 U.S. dollars), at Longmen Township in quake-hit Lushan County, southwest China's Sichuan Province, May 2, 2013. On high alert for secondary disasters, dilapidated houses were dismantled lately after a 7.0-magnitude quake hit Lushan on April 20.(Xinhua/Jin Liangkuai)

Gao Yongjian and his sister Gao Yonghui pose for a photo in front of their dismantled house, which was built in 1992 at a cost of some 30,000 yuan (about 4,870 U.S. dollars), at Longmen Township in quake-hit Lushan County, southwest China's Sichuan Province, May 2, 2013. On high alert for secondary disasters, dilapidated houses were dismantled lately after a 7.0-magnitude quake hit Lushan on April 20.(Xinhua/Jin Liangkuai)

Wei Chunqiang (C) and his family pose for a photo in front of their dismantled house, which was built in 2011 at a cost of some 200,000 yuan (about 32,468 U.S. dollars), at Longmen Township in quake-hit Lushan County, southwest China's Sichuan Province, May 2, 2013. On high alert for secondary disasters, dilapidated houses were dismantled lately after a 7.0-magnitude quake hit Lushan on April 20.(Xinhua/Jin Liangkuai)

Zhang Xiaohua (1st R) and his family pose for a photo in front of their dismantled house, where they have lived for more than 20 years, at Longmen Township in quake-hit Lushan County, southwest China's Sichuan Province, May 2, 2013. On high alert for secondary disasters, dilapidated houses were dismantled lately after a 7.0-magnitude quake hit Lushan on April 20.(Xinhua/Jin Liangkuai)

Li Zhenglong (1st R) and his family pose for a photo in front of their dismantled house, which was built in 2009 at a cost of some 100,000 yuan (about 16,234 U.S. dollars), at Longmen Township in quake-hit Lushan County, southwest China's Sichuan Province, May 2, 2013. On high alert for secondary disasters, dilapidated houses were dismantled lately after a 7.0-magnitude quake hit Lushan on April 20.(Xinhua/Jin Liangkuai)

He Kunjiao (R)and his family pose for a photo in front of their dismantled house, which was built in 1997 at a cost of some 50,000 yuan (about 8,117 U.S. dollars), at Longmen Township in quake-hit Lushan County, southwest China's Sichuan Province, May 2, 2013. On high alert for secondary disasters, dilapidated houses were dismantled lately after a 7.0-magnitude quake hit Lushan on April 20.(Xinhua/Jin Liangkuai)

Yang Minghua (1st L) and his family pose for a photo in front of their dismantled house, which was built in 2007 at a cost of some 100,000 yuan (about 16,234 U.S. dollars), at Longmen Township in quake-hit Lushan County, southwest China's Sichuan Province, May 2, 2013. On high alert for secondary disasters, dilapidated houses were dismantled lately after a 7.0-magnitude quake hit Lushan on April 20.(Xinhua/Jin Liangkuai)

Gao Qingquan (R) and his family pose for a photo in front of their dismantled house, which was built in 2003 at a cost of some 100,000 yuan (about 16,234 U.S. dollars), at Longmen Township in quake-hit Lushan County, southwest China's Sichuan Province, May 2, 2013. On high alert for secondary disasters, dilapidated houses were dismantled lately after a 7.0-magnitude quake hit Lushan on April 20.(Xinhua/Jin Liangkuai)