Qiu (秋) is the Chinese word for "autumn." Qiu Jin (1875-1907) was the Chinese revolutionary poet and feminist — the first prominent advocate for women's rights in modern China. Captured leading an uprising against the Qing in 1907, she refused to confess, was beheaded at 32 — declaring "Autumn wind and autumn rain make me sad to death." "China's Joan of Arc."
Qiu does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Qiu reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.