Twin polar bear cubs Lele (L) and Jingjing (R) show up to the public in Dalian Laohutan Ocean Park in Dalian, northeast China's Liaoning Province, May 29, 2011. The first boy-and-girl twin polar bears born in China met the public for the first time on Sunday after their months-long struggle for survival in which they were saved from premature birth, being abandoned by mother, and the complicated process of changing dieting. [Xinhua/Ren Yong]