A visitor stands at a monument erected to commemorate the Tangshan earthquake in Tangshan, Hebei Province, July 27. The 1976 quake claimed more than 242,000 lives. Photo: Li Hao/GT

Visitors gaze upon a monument to the Tangshan earthquake in Tangshan, Hebei Province, July 27. Photo: Li Hao/GT

Visitors to the Tangshan Earthquake Memorial take in an exhibit on July 28, 40 years on from the tragedy. Photo: Li Hao/GT

A woman takes a photo at the Tangshan Earthquake Memorial on July 28. Photo: Li Hao/GT

Visitors to the Tangshan Earthquake Memorial take in an exhibit on July 28. Photo: Li Hao/GT