Yarsha Zahara had a total of six Minor Treasures, the limit she was able to handle without being burdened physically and mentally. Upon determining her limit, the Boar King thought long and hard of ways to effectively equip her with Minor Treasures.
He had dozens of them that he had accumulated over the past two millennia. But the effects unleashed by a Minor Treasure were too insignificant for him, especially since his Prana was so strong that the Boar King only had to create a Skill that could unleash effects on par with a Minor Treasure.
Hence, he never bothered to equip them. As for Major Treasures, the Boar King never encountered one. So, he had no idea about them. Besides, given his nature, he never bothered to research about them and spent his life running across Sumatra Continent.
Things changed once Yarsha Zahara came into picture.