Three couples holding their marriage certificates pose for photos at a marriage registration center in Shijiazhuang, capital of north China's Hebei Province, Feb. 14, 2017. Many couples registered for marriage on Valentine's Day. (Xinhua/Zhan Xincheng)
A couple holding their marriage certificates pose for photos at a marriage registration center in Suining County, east China's Jiangsu Province, Feb. 14, 2017. Many couples registered for marriage on Valentine's Day. (Xinhua/Hong Xing)
A couple holding their marriage certificates pose for photos at a marriage registration center in Suixi County, east China's Anhui Province, Feb. 14, 2017. Many couples registered for marriage on Valentine's Day. (Xinhua/Wan Shanchao)
A couple holding their marriage certificates pose for photos at a marriage registration center in Neijiang City, southwest China's Sichuan Province, Feb. 14, 2017. Many couples registered for marriage on Valentine's Day. (Xinhua/Lan Zitao)
A couple holding their marriage certificates pose for photos at a marriage registration center in Shanghai, east China, Feb. 14, 2017. Many couples registered for marriage on Valentine's Day. (Xinhua/Zhuang Yi)
A couple holding their marriage certificates pose for photos at a marriage registration center in Suzhou, east China's Jiangsu Province, Feb. 14, 2017. Many couples registered for marriage on Valentine's Day. (Xinhua/Hang Xingwei)
A couple holding their marriage certificates pose for photos at a marriage registration center in Wuxi, east China's Jiangsu Province, Feb. 14, 2017. Many couples registered for marriage on Valentine's Day. (Xinhua/Huan Yueliang)
