A man and a woman pose for a picture during a Valentine's Day Lovers for 72 Hours event in Xuchang City, Central China’s Henan Province, Feb. 12, 2017. In the challenge, both sides agree to spend 72 hours together, pledging to have no physical contact without mutual consent, not interfere each other’s private life, and let the relationship go naturally at the end of the event. Six singles from different regions in China applied to take part in the event. (Photo/CFP)
