Table:
text: List of state leaders in 820s BC
Vassal states
Vassal states
State_ Type_ Name_ Title Royal_house From_
Qin Sovereign Qin Zhong Ruler Ying 845 BC
Qin Sovereign Zhuang Duke Ying 822 BC
Song Sovereign Hui Duke — 830 BC
Wey Sovereign Li Marquis — 855 BC
Yan Sovereign Hui Marquis — 864 BC
Yan Sovereign Li Marquis — 826 BC

Question: What is state if From "830 BC." in the list of heads of state in the 820s B.C. stands?