What is the pipe used in this car? There is a leak at the interface.

This pipeline is a coolant pipeline from the water tank to the engine, mainly to cool the engine, prevent the engine from overheating and ensure the normal operation of the engine. Can't leak, if the engine coolant is not enough, the consequences will be very serious, which will lead to excessive engine temperature and damage to the engine. So we must find the cause of the water leakage and deal with it. And check whether the coolant is sufficient.