Du Zhouhan: a metaphor for the pillars of the country. Suitable for boys' names. It comes from "Weishen Jifu, Weizhou Zhihan" in "The Book of Songs? Daya? Songgao".
Du Wanhui: soft and smart. Suitable for girls' names. From "Book of Jin? Biographies of Women? Murong Chui's Wife Duan": "Small but graceful and wise, with great ambition."