China is holding a national day of mourning today for the victims of a powerful earthquake .
The quake struck the western province of Qinghai a week ago, killing more than 2,000 people.
At 10am local time, China came to a standstill in three minutes silent tribute to the dead.
President Hu Jintao, Prime Minister Wen Jiabao and other government officials also paid their respects.
Sirens and horns sounded to mark the start of the silent tribute. Even those at the disaster site stopped work and bowed their heads as a mark of respect.
Reports say 175 people are still missing and 12,000 are known to have been injured.
Tens of thousands more have been left homeless by the earthquake.
Meanwhile, rescue workers continue to dig through the rubble in the hope of finding survivors.