The formation of 全力以赴 is a conceptual fusion, where its four characters merge to create a single, powerful metaphor for total commitment. It constructs a vivid image of an individual or group ("全", meaning all) marshaling their entire capacity or strength ("力") and directing it entirely ("以", here meaning 'in order to') toward rushing forward or going to a task ("赴"), like an army charging into battle. This isn't a grammatical assembly but an idiomatic crystallization from classical Chinese, where each character's intrinsic meaning seamlessly blends into a holistic picture of dedicating every resource and ounce of energy toward a singular goal.