While walking past a restaurant this evening I was stopped dead in my tracks by this sign that said . . .

Now I do not speak nor read Chinese but I am sure curious to know what the sign goes on to say. Now HOW do they do that to a chicken? And for god’s sake WHY? Does it make the meat taste any better?
And How do I verify that I got what I ordered?
Customer (to waiter): Are you sure this chicken was castrated?
Waiter: Errr I don’t know sir, we just trust the cook.
Customer: Well, I want to have a look for myself, ask the cook to show me that errrr part.
Waiter: Errr sir…. you want to see the chicken’s “that part” for yourself?
Customer: yes you heard me and bring the cook along too.