Singles Day (Guang Gun Jie/光棍节) in China is an informal holiday that takes its inspiration from the four 1’s in the date 11.11, representing being single. Some celebrate freedom while others are filled with anxiety over being lonely. Long and singular foods like youtiao and pretzel rod snacks like Pocky or Pepero should be consumed to commemorate standing alone. Think of it as the Anti-Valentine’s Day.

Wikipedia says:
For breakfast on Singles’ Day, singles often eat four Youtiao (deep-fried dough sticks) representing the four “ones” in “11.11” and one Baozi (steamed stuffed bun) representing the middle dot.

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Singles Day in China