Daily Chinese Idiom Guessing Game
The evidence is conclusive and irrefutable.
确凿确实。证据确实可靠，无法否认。
清·曹雪芹《红楼梦》第八十六回尸场检验，证据确凿。且并未用刑，尔兄自认斗杀，招供在案。今尔远来，并非目睹，何得捏词妄控。理应治罪，姑念为兄情切，且恕。不准。”
With the fingerprints and DNA match, the evidence was ironclad.