A Naxi woman carries her grandson in Lijiang

A Naxi Chinese ethnic minority woman carries her grandson home from shopping in Lijiang, northern Yunnan Province, on September 30, 2012. China is facing a demographic time bomb as it hits 100 million elderly, making it the only country on earth with more than 100 million elderly people. Proof is multiplying that the world's most populous country is aging at an alarming pace. UPI/Stephen Shaver