If the car water tank is leaking, it is not recommended to continue driving. You should pull over immediately, stop the car, call the rescue phone and wait for rescue.
If you continue to drive, because the water tank is already leaking antifreeze, the antifreeze will become less and less, but the engine is still working, and the heat dissipation of the engine will become less and less because of the antifreeze. The loss of cooling effect will cause the engine to overheat, each component will overheat and expand, and the internal components will become stuck. In this way, the engine will be damaged and the engine will need to be overhauled. This is what we commonly call "pull cylinder"