Which cultural tradition gave birth to Singles' Day (November 11 or 11.11), now the world's largest shopping festival?

Cultural shopping festivals have become massive global retail events, generating billions in sales and celebrating unique cultural traditions. From Singles' Day to Black Friday, these events blend commerce with cultural significance. How well do you know the origins of these culturally-significant retail phenomena? This trivia question tests your knowledge about one of the world's fastest-growing shopping festivals and its fascinating cultural roots.

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It began as an anti-Valentine's protest by university students in Nanjing, China in the 1990s, celebrating being proudly single (the date 11.11 resembles 'bare sticks' or singles)
It originated from a Korean harvest festival tradition where unmarried people would wear special bracelets with 11 beads, representing self-sufficiency
It evolved from a Japanese business initiative in the 1980s to boost sales during the traditional 'Pocky Day' celebration (Pocky sticks resemble the number 11)
It started as a Taiwanese digital innovation festival, with binary code 1111 representing technological advancement and online shopping