Chang Geng did not dare to look at him. He sat on his side, lowered his eyes, and breathed in and out according to the method Miss Chen taught him. But the sound of rustling clothes that was clearly so low and so easy to be suppressed by the rumble of the carriage, it seemed to have mutated at this time, continuously drilling into his ears. The more he tried to breathe, the more unstable he became.

Gu Yun placed his hair crown onto the small table in the carriage, the sound awakening Chang Geng: "I cooked a little medicine to disperse the cold, you first..."

His voice silenced, Gu Yun's ice-cold fingers had grasped his wrist.

Chang Geng was agitated for a moment, wanted to retract his hand, but Gu Yun was tightly holding on to him, he could only call out in a small voice: "Yifu..."

"I don't know much about taking a pulse," Gu Yun's expression was incredibly serious, "But I know what 'qi deviation as a result of training gone wrong' is."

Chang Geng rushed away from his gaze in a panic.

"Chang Geng, tell me the truth, do you..." As Gu Yun got here, he paused from feeling self-conscious; even if his heart was as vast as the sea, his skin was as thick as the palace wall, he could also feel that the following words were not suitable to speak aloud.

Chang Geng seemed to have a premonition, and slowly lifted his red eyes.

Gu Yun was silent for a while, mustering up even bigger courage than when he opposed the Emperor: "Is there something weighing down on your mind?"

After a few gasps for air, Chang Geng whispered, "What did yifu say?"

Gu Yun: "...About me."

https://www.northwestflower.net/sha-po-lang/book-2/chapter-6-frost-and-snow/6-iii

When Gu Yun finished, he could instantly feel Chang Geng's pulse beat a little faster. It was almost impossible to count anymore. The wrist that he was grasping in his palm was burning hot. There seemed to be a volcano hidden under the vein on the verge of exploding even with only a touch, wanting to cut Chang Geng's veins into little pieces.

Although he had been flexible in this matter, Gu Yun did not expect that Chang Geng would react this strongly. Worried that something had gone wrong, he reached out a hand to Chang Geng's chest: "Calm yourself, don't think excessively!"

Chang Geng pulled his hand down, grasping it on his own, the joints of his bone cracking. Gu Yun narrowed his eyes.

Chang Geng's face was pale, his eyes like blood, infinite phantoms flashing in front of them. There were thousands of troops beating their drums, demons and ghosts swaying, a part of the Bone of Impurity was drinking the blood from his heart, becoming stronger, countless thorn-filled branches expanding, stuck on his throat, tearing at his insides...

But at the very end of the Bone of Impurity, there was one Gu Yun.