Which country did Jiang Ziya help? Who invited Jiang Ziya out of the mountain?

Western Zhou Dynasty, Jichang, Zhou Wenwang.

Before going out hunting, Ji Chang divined a divination, which said: "The prey is neither a dragon nor a bite, nor a tiger or a bear; The income is the assistant minister who has achieved the hegemony. " Ji Chang went hunting and met Jiang Ziya on the north bank of Weihe River. After talking with Jiang Ziya, Ji Chang was overjoyed and thought that Jiang Taigong was a wizard. He said: "Since our country's great-grandfather said,' A saint will come to Zhou, and Zhou will flourish.' Is that you? We have been expecting you for a long time. . So Jiang Ziya was called "King Taigong", and they rode home together, honoring them as surnames.