Master Guyue sought out Feng Jun not only to hitch a ride but also to exchange pleasantries and request Feng Jun's assistance in deducing some secret techniques of the Taixu Sect—either they were partially incomplete or somewhat lacking in power.
As for the remuneration, he hoped to pay with mid-grade Spirit Stones; if that wasn't possible, he could authorize Feng Jun to use the secret techniques.
The reason for authorizing the use of secret techniques is that by helping to deduce them, their principles and mechanisms would no longer be a secret to Feng Jun, becoming shared knowledge between White Pebble Beach and Taixu, although Taixu could prohibit White Pebble Beach from using these secret techniques.
In fact, the secret techniques that Taixu allows to circulate are not their fundamental Dharma; most are acquired by Taixu disciples through various means, and they are unsure whether more complete inheritances exist elsewhere, so they are somewhat relaxed about controlling them.
