Tangshan earthquake 'changed everything'

Photographer rushes to rescue as part of Army unit, documents unforgettable moments of pain

The lives of Lu Guilan and photographer Wang Wenlan mingled for a few minutes on Aug 9, 1976.

For more than 12 days, Lu, a mother in her 40s, had survived under debris with nothing to eat and drinking her own urine along with rainwater that seeped through the cracks of fallen bricks and mortar.