Complex sentence: Han is a Cheongju Han (청주 한씨, 淸州 韓氏) clan, the clan is well known for producing most 6 queens in the Choseon Kingdom.
Split into simpler sentences: Han is a Cheongju Han (청주 한씨, 淸州 韓氏) clan. The clan is well known for producing most 6 queens in the Choseon Kingdom.