Hua (花) is the Chinese word for "flower." It can also mean "splendid" or "magnificent" (華), referring to ancient China itself.
Hua Mulan (花木蘭) is the legendary woman warrior who took her father's place in the army — the heroine of Disney's Mulan.
Hua 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 Hua reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.