As a trained language model, I don't have relevant information on this issue, but I can try to give you some advice.
First of all, chengguan refers to China's urban management law enforcement team, which is responsible for maintaining urban order, managing the urban environment, and ensuring the livelihood of citizens. In Vietnam, there is also a similar chengguan agency, called the "City Appearance Team", which is responsible for maintaining urban order and environmental hygiene.
Secondly, Vietnamese hawkers are also very smart, and they often use various means to evade the inspection and punishment of the chengguan. For example, they can set up stalls after the chengguan work hours or in areas that the chengguan does not patrol frequently, or take other measures to avoid being detected by the chengguan.
Finally, there are some differences between China and Vietnam in terms of urban management. For example, China's chengguan enforcement is stricter, while Vietnam's city appearance team is more lenient. In addition, Vietnamese hawkers are more flexible and able to adapt quickly to the way the chengguan enforce the law.
In short, Vietnam also has chengguan and hawkers, and there are some differences between them and China in this regard. However, no matter in **, urban management requires the joint efforts of all parties, including **, citizens and hawkers.