Emotional Attachment 

"Senior Brothers and Senior Sisters, you guys shall stay in this Boundless Sea, from now on."

After coming back to his senses, Chen Chen said to Yu Huo and the rest.

Hearing this, Yu Huo was a bit hesitant, but Chen Chen's Second Senior Sister, Zhao Xiaoya, who was behind him, said, "We still have to return to the Eastern region of the demon race. After all, the Master is still there."

Chen Chen felt helpless because the reason that Yu Qiong had asked these gullible people to go to the Boundless Sea was already obvious enough. 

If the purpose was really just to deliver a message to Chen Chen, sending Yu Huo alone would be enough.