With the Roc Bird assisting, traveling truly became much more convenient. A journey that would have taken days could now be completed in merely one or two hours.
This time, Li Ping'an returned to the main world without bringing his entire entourage. He simply called upon Guilingling and his own master, Qing Su, to accompany him.
The main reason was that Immortal Huanglong had recently been frequently "not returning to his quarters," often leaving for months of gallivanting before finally returning to the Misty Realm. Li Ping'an, wanting to maintain the balance of Chanjie, couldn't even catch the shadow of his dragon.
According to Li Ping'an's guess... purely a guess, mind you.
Immortal Huanglong most likely went to Skull Mountain's Bone Cave.
As for what transpired there, that remains a mystery.