C1309 His Father's Puzzlement
Alchemists had a very high status, especially high-level alchemists. They were very arrogant, and even God Tier alchemists like Shangguan Yushi treated all the sects and big families in the Heavenly Emperor Divine Realm like they were their own grandmasters.
Anyone with a good technique would not have a good temper. Shangguan Yao Zu was the same. Seeing Ma Zhenshan was clearly an outsider