How to represent Wenzhou Game Teahouse Room Card?

The room card of Wenzhou Game Teahouse can be used for consulting agency matters in official website.

In C # language, agency refers to Delegate, which is also translated as entrustment. The delegate in C# and the function pointer in C++ are basically the same thing, and C# implements the function pointer in the form of delegate. The difference is that delegate in C# is type-safe. (Strictly speaking, the delegation in C# encapsulates a method that meets certain characteristics as a parameter type in an object-oriented way, so that it can be used as a parameter; The implementation principle of delegation is completely different from that of function pointer)