A couple look at their marriage certificates after registering in the marriage registration office in Furong district of Changsha, capital of Central China's Hunan Province, January 4, 2013. Quite a number of couples flocked to tie the knot on January 4, 2013, or 2013/1/4, which sounds like "Love you forever" in Chinese. (Xinhua/Li Ga)
A couple showing their marriage certificates pose for a photo after registering in the marriage registration office in Changsha, capital of Central China's Hunan Province, January 4, 2013. Quite a number of couples flocked to tie the knot on January 4, 2013, or 2013/1/4, which sounds like "Love you forever" in Chinese. (Xinhua/Li Ga)
Couples crowd the marriage registration office in Zhengzhou, capital of Central China's Henan Province, January 4, 2013. Quite a number of couples flocked to tie the knot on January 4, 2013, or 2013/1/4, which sounds like "Love you forever" in Chinese. (Xinhua/Li Bo)
Couples crowd the marriage registration office in Zhengzhou, capital of Central China's Henan Province, January 4, 2013. Quite a number of couples flocked to tie the knot on January 4, 2013, or 2013/1/4, which sounds like "Love you forever" in Chinese. (Xinhua/Li Bo)
Couples pray before a number "201314" shaped by marriage certificates at the marriage registration office in Zaozhuang, East China's Shandong Province, January 4, 2013. Many couples here flocked to tie the knot on January 4, 2013, or 2013/1/4, which sounds like "Love you forever" in Chinese. (Xinhua/Sun Zhongzhe)
Couples wait in queue to register at the marriage registration office in Suining county, East China's Jiangsu Province, January 4, 2013. Many couples here flocked to tie the knot on January 4, 2013, or 2013/1/4, which sounds like "Love you forever" in Chinese. (Xinhua/Hong Xing)
A staff member works for the couples at the marriage registration office in Haikou, capital of south China's Hainan Province, January 4, 2013. Quite a number of couples flocked to tie the knot on January 4, 2013, or 2013/1/4, which sounds like "Love you forever" in Chinese. (Xinhua/Guo Cheng)
A couple show their marriage certificates at the marriage registration office in Zhengzhou, capital of Central China's Henan Province, January 4, 2013. Quite a number of couples flocked to tie the knot on January 4, 2013, or 2013/1/4, which sounds like "Love you forever" in Chinese. (Xinhua/Li Bo)
A couple show their marriage certificates at the marriage registration office in Haikou, capital of South China's Hainan Province, January 4, 2013. Quite a number of couples flocked to tie the knot on January 4, 2013, or 2013/1/4, which sounds like "Love you forever" in Chinese. (Xinhua/Guo Cheng)
Couples wait in rain to register in front of the marriage registration office in Haikou, capital of South China's Hainan Province, January 4, 2013. Quite a number of couples flocked to tie the knot on January 4, 2013, or 2013/1/4, which sounds like "Love you forever" in Chinese. (Xinhua/Guo Cheng)