The 'comrade', or to say, Lin Ze, is looking at Ah Yu with his eyes bloodshot and his hand tightly holding the hilt of his saber. He really wants to kill this Ah Yu, but he can't since Huichen wanted him to catch Ah Yu alive. Hearing what this Ah Yu said earlier, Lin Ze knows that there is more to Wen Liao's case, as he had suspected before.
'that thing'? What is that thing? Lin Ze thought. But, he can't ask more, since he knows that the higher-ups don't want Wen Liao's case to be investigated further. That is why they hurriedly closed Wen Liao's case. Thus, Lin Ze could only slowly investigate this matter. He now realized that his elder brother called him for this. His elder brother must also know since he is working in the palace. And the emperor must be the one who requested for Wen Liao's case to be closed.