Change

"B – boss, I – I – " Wen Jun spoke with an obvious trembling voice. Even though his voice is trembling, his eyes showed fear of the unknown that he might encounter later if he will go back. 

But, Nie Fan assured Wen Jun as he looked at Wen Jun. He naturally knows what he is worried of, since has been a mortal before. And, he was even just an ordinary person, thus he would feel instinctive fear when it comes to ghosts or demons. Thus, Nie Fan gets where Wen Jun is coming from. 

But – "Don't worry. Since you have reached us until here, then that means that this mysterious space is very safe." Nie Fan spoke. He still wanted to prioritize Su Yu's welfare over Wen Jun's welfare. Not because Nie Fan knows Su Yu longer than he knew Wen Jun, it was actually that Nie Fan feels uneasy leaving Su Yu with Duan Tianyang, who is giving off a different… and also very dangerous vibe which was why he went here to look for Su Yu.