Network Valentine's Day is a love festival in the information age. It is celebrated on May 20 and 21 each year. The festival originated from singer Fan Xiaoxuan's Digital Love, in which "520" is compared to "I love you" [1], and musician Wu Yulong's online song, in which "I love you" is closely related to "Internet lover" [2]. Later, "521" was gradually given the meaning of "I do, I love you" by lovers [3]. "Cyber Valentine's Day" is also known as "auspicious wedding Day", "Confession Day", "Sajiao Day" and "Courtship Day" [4].
In this fashionable, young, spiritualized and implicit festival, "520 (521) 1314 I love you (I am willing to) all my life" is its classic digital quotation [5]. Wu Yulong's [6] Internet Lover [7] is the main song of the festival [8]. People in these two days, by traditional (mobile and PC) Internet network (with WeChat, QQ, weibo, BBS, etc for the platform or bold text messaging on mobile phones (show) love, even an gifts (red envelope) love, to find love, countless couples married cluster, grand wedding [9], many businesses also try to conduct deals, discounts and other promotions, A wave of holiday fever has set off online and offline. With the increasing number of people participating in the festival, various media (newspapers, TV, Internet, etc.) reported the "Online Valentine's Day", "Love Day" and "Sajiao Day" on 520 and 521