Even though the orcs have an international looking face, the language used is all Chinese. This could be linked to the previous messenger of the beast deity being a Chinese national, so the English that Gu Mengmeng used could not be understood by Lea, but this did not stop them from understanding her expression and action, so they could guess what she was trying to express.
He lowered his hands gently onto Gu Mengmeng's shoulders and with an appropriate strength, he said while massaging her, "Since this is a situation that he is bound to die, you should just leave him be. If he dies there, it would also be a clean death, and save us trouble."