To say Wen Qinxi blew a fuse would more accurate. He was seeing red trembling in anger. If Qie Ranzhe had been careless for just a single moment he most certainly would have stabbed her to death right there and then. When Wen Qinxi first came to this world he wanted to kill her on the spot but didn't not only because she was dating Qie Ranzhe but also because he couldn't kill her for crimes committed by the Zhao Huangzhi in the second world.
Zhao Huangzhi had toppled over his bottom line several times already but when she tossed that phone with Qie Xieling's picture he finally snapped.
Qie Xieling was the only memory he had of the blissful love he shared with Qie Ranzhe in the second world and she dared to desecrate that. This is why he went off the rails and threatened her with no reservations.