Literature Reference: 'King Wen is above, shining brightly in the heavens. Though Zhou is an ancient state, its mandate is renewed. The mandate comes from heaven, bestowed upon King Wen. In Zhou and its capital, the daughter of Shen continues the lineage. The eldest son carries on, and King Wu is born steadfast. Heaven protects and commands you, to harmonize and conquer the great Shang.' From 'The Book of Songs·Da Ya·King Wen'.