There is Zhou Hei Ya in Wangjiawan, Wuhan, which can be vacuum packed.
After inquiries, we learned that there is an authentic Zhou Hei Ya restaurant under the Wangjiawan Walmart Plaza, and all kinds of cooked food in it can be vacuum packed.
Vacuum packaging is a packaging method that puts the product into a specific sealed bag and removes the air inside to make the bag reach a certain degree of vacuum.
It saves packaging space and is convenient for people to carry daily.