If you continue to drive, the antifreeze will be less and less because the water tank is leaking antifreeze, but the engine is still working, so the cooling effect of the engine will be lost because of less and less antifreeze, which will lead to overheating of the engine, overheating and expansion of various parts, and internal parts will be stuck, and the engine will be damaged and need to be overhauled. This is what we usually call "pulling the cylinder"