The marriage registration office swarms with couples in Jiangbei District of Chongqing, southwest China, Jan. 4, 2013. Many couples here rushed to tie the knot on Jan. 4, 2013, or 2013/1/4, which sounds like "Love you forever" in Chinese.

Couples wait in queue to register at the marriage registration office in Luyang District of Hefei, capital of east China's Anhui Province, Jan. 4, 2013. Many couples here chose to tie the knot on Jan. 4, 2013, or 2013/1/4, which sounds like "Love you forever" in Chinese.