With the influence that Jiang Chen has gained on Spiritual Mountain, he has become a figurehead of Buddhism. It will certainly make it easier to further his plans.
After conversing with Jiang Chen, The Buddha left. After all, he would need to make some accomplishments if he wanted Jiang Chen to yield, right? For now, he decided to allow the lineage of the great virtue and great power king Buddha to develop.
Only then, could he negotiate with Jiang Chen.
After the Buddha left, Jiang Chen rode the clouds back to Heaven Court and reported to the Jade Emperor: "Your Majesty, I have successfully accomplished the task and captured the demon monkey, awaiting Your Majesty's judgement!"
Seeing Jiang Chen triumphant in return, the Jade Emperor loudly praised: "Having Jiuchen around is a blessing for Heaven Court. As for that demon monkey, since Jiuchen has captured it, it will be given to Jiuchen to deal with to avoid any further upheaval."