Is Feng Yu really used to drill holes and drain water on the exhaust pipe?

"I don't know if I should fight"-this sentence was said first. If it is not inferred correctly, this punch is the patent of the former life "Tianyu sx4" of scross sx4. Tianyu sx4 muffler liner is not made of stainless steel. Once in winter, it is easy to accumulate water vapor in the exhaust gas from the engine and condense it into water (that's how water comes from), which will rust after a long time.