Ji Cheng was stunned when he heard Zhao Ming calling her dog, that too in English.
He knows a very little about this foreign language and all of that because of dealing with foreign merchants but how come she knows this language?
He has ignored this when she spoke English for the first time at the Empress Dowager's birthday banquet. But this time, he clearly knows that she is speaking English and it's not just rubbish.
Zhao Ming opens her eyes when she realizes that he had stopped in the middle. When her gaze met with his eyes, she saw the confusion in them.
She frowned and when reality hit her, she realized that she had cussed at him unconsciously and that too in English.
It would have been easier to handle this situation if he wouldn't know about the English language but unfortunately, he knows about it. On top of that, from his speechless expressions, he seems to know the meaning of the word, ' DOG'.