Hao Tian is the protégé of the Daoist Ancestor, acquiring eighty percent of his abilities from the Daoist Ancestor. Yin Shi Wang is his Yorisha spirit, quite similar to him.
The seal in question is an authentic Mystic Sect mechanism. Nezha, having learned from Nuwa, is also a top disciple of the Mystic Sect, but he still cannot break this seal through normal means.
No matter how accomplished, a top student can't know their classmate's bank account password!
The only option left is to use unconventional means; the simplest way is brute force destruction.
Hao Tian could definitely manage it, but Xuanzang, being a mortal, made the rescue more challenging.
Ultimately, Nezha resorted to using the Kunlun Mirror to open a passageway through the seal, rescuing those inside.
Hao Tian observed Nezha's techniques for a bit but didn't quite grasp it. Xuanzang and the others didn't linger, swiftly exiting once free.
