Objective

BANG! Nie Fan hit the wall when he heard what Su Yu said as he recounted his and Kong Weijun's meeting with Zheng Yan earlier.

"I knew it!" Nie Fan gnashed his teeth in anger as flames of anger can be seen in his eyes. SANG! QUE! He thought when he recalled the one who stabbed – figuratively and literally, Su Yu in the back which caused Su Yu to die that time when Duan Yuan went to the demon realm to 'kill' Su Yu as the mission that the immortal realm gave to him.

Nie Fan didn't want for Su Yu to hear Sang Que's name again in order to not let Su Yu recall unpleasant memories. So, he acted as if the past didn't happen since he wanted for Su Yu to start a new life here. Yet it seems fate doesn't want to let them go and want them to recall the past as it brought the Fujing Sect here, which then became a cult.