❔ What of use is the keyword "event"

using System;

class A
{
    public delegate void F(int x, int y);
    static public /*Event*/ F Event;

    public static void Hi()
    {
        Event(1, 2);
    }
}

class B
{
    internal void Print(int x,int y)
    {
        Console.WriteLine(x + y);
    }
}

public class Test
{
    static void Main()
    {
        B suck = new B();
        A.Event += suck.Print;
        A.F x = new A.F(suck.Print);
        A.Hi();
        x(1, 2);
    }
}