Offense?
The last time he had met Xu Xing, Kang Yu's tone had been unfriendly. Believing Xu Xing was involved with Yan Xiling, he had stopped him. But upon learning Xu Xing was to marry into the Yan Family, his attitude shifted... He immediately offered a bottle of Snow Spirit Water as a welcoming gift.
This shouldn't have counted as an offense!
However, Xu Xing was now a promising Dao Pill Daoist of the Immeasurable Sect. After this change in status, what Kang Yu had considered a normal gesture was, to Xu Xing, a grave "disrespect." Frivolous words might mean little to someone of low standing, but to the powerful, they were a provocation. At that time, Xu Xing had just reached the third level of the Blending Light Realm and was a freelance cultivator recruited by the Immeasurable Sect. Compared to Kang Yu, the direct grandson of Ze Sheng Ancestor, Xu Xing's status was naturally much lower.