It’s not him who goes after them. The other realm. I think there is some protective layer when ZW / QH use their…
The Heavenly Emperor knew QH and QW go to Mortal Realm to help Yetan but instead send someone to go after them, he just let them there since he know that when Youqin successfully restructured, they will back to Heavenly Realm.
The struggle to not laughing whenever I see Sang Jiu/Clam is real. xD I keep remembering Bai Lu's "Ming Ye, are you there?" scene in previous livestream. xD