十一

PRC National Day (October 1st)

eleven / 11

ten / 10

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

November / eleventh month (of the lunar year)

blackjack (card game)

three sevens are twenty-one (idiom) / the facts of the matter / the actual situation

November

regardless of the consequences / recklessly relying on a hopelessly optimistic forecast

(coll.) going on foot

who cares / no matter what / regardless of the consequences

see 光棍節|光棍节[Guang1 gun4 jie2]

the Japanese Twenty-One Demands of 1915

21st century