Why is water dripping from the Langdong's exhaust pipe?

[MacColin]

Langdong's exhaust pipe has water dripping phenomenon because the ambient temperature is relatively low. After complete combustion of gasoline, water and carbon dioxide are produced. Water exists as vapor at high temperatures, and the water vapor condenses in the exhaust pipe and muffler. However, when the ambient temperature is high, the water vapor is discharged before it condenses. When the ambient temperature is low, the water vapor condenses into water droplets on the exhaust pipe wall and flows out along the exhaust pipe. The phenomenon of water dripping from the Langdong's exhaust pipe proves that the fuel is fully burned in the engine. The dimensions of the Langdong are 4570mm in length, 1775mm in width, and 1445mm in height.