mortal combat deception question about a temple in earth realm

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hi everybody, So my question is: during the lessons with(bo rai'cho),i saw a temple in earth realm(1),and there were a guard in front of it and behind him there is tow shirtless guards wearing orange pants. So when i try to enter it they tell that only monks are allowed to enter it,so is there a way to enter it??,and if there is can you please tell me how to do it.I did some researches on the internet but no nothing helped me. i am desperately waiting for your answers.