Zài guānjiàn shíkè, tā yī chuí dìng yīn de nénglì hěn zhòngyào.
At critical moments, his ability to make the decisive call matters greatly.
Tips
culture
From gong (锣) making: the final hammer strike on a newly cast gong determines its pitch — once struck, the tone is set. The metaphor was fixed in modern Chinese and spread through Liu Shaotang's fiction.
memory
Picture a gong-smith raising the hammer for the last blow — one strike fixes the pitch forever. That final hammer = the final word.