Tents are erected in quake-hit Pixna Township of Pishan County of Hotan Prefecture, northwest China's Xinjiang Uygur Autonomous Region, July 4, 2015. A 6.5-magnitude earthquake rocked Pishan County of Hotan Prefecture at 9:07 a.m. (0107GMT), with the epicenter recorded at 37.6 degrees north and 78.2 degrees east, according to the China Earthquake Networks Center (CENC). Relief materials are being carried to the quake-hit regions. Photo: Xinhua

Armed policemen communicates with residents in a tent in quake-hit Pixna Township of Pishan County of Hotan Prefecture, northwest China's Xinjiang Uygur Autonomous Region, July 4, 2015. A 6.5-magnitude earthquake rocked Pishan County of Hotan Prefecture at 9:07 a.m. (0107GMT), with the epicenter recorded at 37.6 degrees north and 78.2 degrees east, according to the China Earthquake Networks Center (CENC). Relief materials are being carried to the quake-hit regions. Photo: Xinhua 

Armed policemen transfer an injured resident in quake-hit Pixna Township of Pishan County of Hotan Prefecture, northwest China's Xinjiang Uygur Autonomous Region, July 4, 2015. A 6.5-magnitude earthquake rocked Pishan County of Hotan Prefecture at 9:07 a.m. (0107GMT), with the epicenter recorded at 37.6 degrees north and 78.2 degrees east, according to the China Earthquake Networks Center (CENC). Relief materials are being carried to the quake-hit regions. Photo: Xinhua 

Residents eat melons provided by volunteers in quake-hit Pixna Township of Pishan County of Hotan Prefecture, northwest China's Xinjiang Uygur Autonomous Region, July 4, 2015. A 6.5-magnitude earthquake rocked Pishan County of Hotan Prefecture at 9:07 a.m. (0107GMT), with the epicenter recorded at 37.6 degrees north and 78.2 degrees east, according to the China Earthquake Networks Center (CENC). Relief materials are being carried to the quake-hit regions. Photo: Xinhua 

A volunteer carries relief materials to a warehouse at a disaster-relief center at Pishan Secondary Vocational School in quake-hit Pishan County of Hotan Prefecture, northwest China's Xinjiang Uygur Autonomous Region, July 3, 2015. A 6.5-magnitude earthquake rocked Pishan County of Hotan Prefecture at 9:07 a.m. (0107GMT), with the epicenter recorded at 37.6 degrees north and 78.2 degrees east, according to the China Earthquake Networks Center (CENC). Relief materials are being carried to the quake-hit regions. Photo: Xinhua 

Resident Guliqiemu prepare to get rice and flour from disaster-relief center in quake-hit Pixna Township of Pishan County of Hotan Prefecture, northwest China's Xinjiang Uygur Autonomous Region, July 4, 2015. A 6.5-magnitude earthquake rocked Pishan County of Hotan Prefecture at 9:07 a.m. (0107GMT), with the epicenter recorded at 37.6 degrees north and 78.2 degrees east, according to the China Earthquake Networks Center (CENC). Relief materials are being carried to the quake-hit regions. Photo: Xinhua 

Volunteers unload relief materials from a truck in quake-hit Pishan County of Hotan Prefecture, northwest China's Xinjiang Uygur Autonomous Region, July 3, 2015. A 6.5-magnitude earthquake rocked Pishan County of Hotan Prefecture at 9:07 a.m. (0107GMT), with the epicenter recorded at 37.6 degrees north and 78.2 degrees east, according to the China Earthquake Networks Center (CENC). Relief materials are being carried to the quake-hit regions. Photo: Xinhua 

Armed policemen help erect tents for residents in quake-hit Pixna Township of Pishan County of Hotan Prefecture, northwest China's Xinjiang Uygur Autonomous Region, July 4, 2015. A 6.5-magnitude earthquake rocked Pishan County of Hotan Prefecture at 9:07 a.m. (0107GMT), with the epicenter recorded at 37.6 degrees north and 78.2 degrees east, according to the China Earthquake Networks Center (CENC). Relief materials are being carried to the quake-hit regions. Photo: Xinhua 

Residents queue to get relief materials in quake-hit Pixna Township of Pishan County of Hotan Prefecture, northwest China's Xinjiang Uygur Autonomous Region, July 4, 2015. A 6.5-magnitude earthquake rocked Pishan County of Hotan Prefecture at 9:07 a.m. (0107GMT), with the epicenter recorded at 37.6 degrees north and 78.2 degrees east, according to the China Earthquake Networks Center (CENC). Relief materials are being carried to the quake-hit regions. Photo: Xinhua 

Residents get relief materials in quake-hit Pixna Township of Pishan County of Hotan Prefecture, northwest China's Xinjiang Uygur Autonomous Region, July 4, 2015. A 6.5-magnitude earthquake rocked Pishan County of Hotan Prefecture at 9:07 a.m. (0107GMT), with the epicenter recorded at 37.6 degrees north and 78.2 degrees east, according to the China Earthquake Networks Center (CENC). Relief materials are being carried to the quake-hit regions. Photo: Xinhua