After destroying the Sect Leader and those elders, he couldn't be bothered with the young disciples and just let them go, deciding to deal with them if they caused trouble in the future. After wiping out those small fry, he managed to collect quite a bit of gold, silver, Spirit Stones, and some cultivation techniques, ending the looting spree with a haul of over 300,000 Dao Points.
300,000 Dao Points from a single sect isn't bad at all. And that's just what's on the surface; there are likely many hidden treasures that he couldn't find. But there's no way he could slowly search through the sect's premises; he had to get back to Xufu Town to manage other affairs.
These 300,000 Dao Points are indeed quite satisfying; "Let more enemies like this come my way!"
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