This morning, my boss asked me "How do you write your middle name? Is written this way?" he pointed to the word writed by him, just like '衍', "The pronounciation of this word is ‘Yan’, my middle name is 'Heng', it’s different." I answered. "I see, I just want to know if this is correctly written?" “The pronunciation of this word is ‘Yan’…” I tried to explain, “I got it, just say yes or no.” he interrupted me rudely.
This time, I'm really speechless.

He wanted to know if that was how you wrote it; he would have been rude because you told him what it meant, and not if it needed to be written differently because the pronunciation was different.

My Reasonless Boss

This morning, my boss asked me, "How do you write your middle name? Is it written this way?". He pointed to the word he wrote, just like this "衍”. The pronunciation of this word is ‘Yan’, my middle name is 'Heng' and it’s different. I answered. "I see, I just want to know if this is correctly written?" “The pronunciation of this word is ‘Yan’….", I tried to explain. “I got it, just say yes or no”, he interrupted me rudely. 

This time, I'm really speechless.

I think your boss was just expecting a different answer from you, that's why he had a - not so good last statement, “I got it, just say yes or no”. That's why you thought, he was quite rude that time.