Is it normal for the exhaust pipe to click after running at high speed and stopping?

After the vehicle is turned off, sometimes there will be a "beep" sound similar to the exhaust pipe hitting the metal. The reason is that the automobile exhaust pipe will expand when heated, and the muffler tile in the exhaust pipe will expand when heated, and will shrink when turned off. The "beep" sound you hear is actually the sound made by the contraction of the exhaust pipe metal, which is a normal phenomenon.