Evergrande delivers milk. What do you mean?

Evergrande delivers milk. This stalk comes from an interview with a small fan in Beijing Guoan. The reporter asked him if he still had confidence in Guoan. He replied that Evergrande delivered milk. In fact, the meaning here does not mean that Evergrande really delivers milk, but ridicules Evergrande, just like the employees who deliver milk every day, knocking at the door and not entering the door. On the football field, you just don't score goals.