In China, many people believe that the more you drink at the social gatherings, the better our relationship will be. So the "exhaust gas" in the video is actually the Chinese persuasion words which are used to urge guests to drink more, like "if you think we have deep feelings, you will drink it all in one gulp." and so on. Each sentence is very rhyming, which often make people hard to refuse.
All the persuasion words are piled up underneath in the shape of a wine glass, and when the car crashes, you can see the largest character "醉" is smashed out, which means "drunk", and in Chinese, namely in pictographs, the right half of the character "醉" contains two "人", which means two "person", while the "十" below represents an ambulance, meaning that the drunk driver who had a car accident and was eventually taken to the hospital by ambulance.
Overall, the video mainly want to advise people not to drink too much and not to drink-drive according to a visual deconstruction of the text.

Peini Zhuang

Zhen Fan

Peiyuan He

Xin Zhang

Yifu Zhang