In this photo released by China’s Xinhua News Agency, people walk through a street partly covered with rubble after an earthquake hit Christchurch, New Zealand, Tuesday, Feb. 22, 2011. The powerful earthquake struck one of New Zealand’s biggest cities Tuesday at the height of a busy workday, toppling tall buildings and churches, crushing buses and killing dozens of people in one of the country’s worst natural disasters. (AP Photo/Xinhua, Pu Rui) NO SALES