Network Valentine's Day, also known as "wedding auspicious day", "confession day" and "coquetry day", is a love festival in the network age and the first fixed festival in the virtual network world. It is scheduled for May 20th and May 2nd1day every year, because the homonym of "520" and "52 1" is "I love you". This festival originated from Mavis Fan's song "Digital Love", in which "520" is compared to "I love you" and the close relationship between "I love you" and "online lover" in the song "online lover" by musician Wu Yulong.
On this festival, people express their love through WeChat, QQ, Weibo, forums and short messages. Countless couples get together to register for marriage. At the same time, this festival has also become a shopping carnival.