This is real, no-nonsense kung fu, not flashy showboating.
Tips
register
Colloquial but widely usable, including in business and journalism. The pattern A-打-A (X-strike-X) is a productive emphatic structure: 实打实 'real-strike-real' = unambiguously real; 硬打硬 (yìngdǎyìng) 'hard-strike-hard' = head-on / no shortcuts.
memory
Picture the word as 'real-on-real contact' — like two surfaces meeting with no padding in between. No fluff, no marketing, no dilution: what you see is what you get.