"King Wu of Cheng Tang" was the forger of which two dynasties?

Tang Cheng, or Tang, is the legendary founder of Shang Dynasty, and Oracle Bone Inscriptions has proved its existence. Objectively speaking, Cheng Tang may be the founder of Shang civilization from a macro perspective, taking the temple names Taizu and posthumous title as martial arts, that is, Wu Wangtang, the ancestor of Shang Dynasty. Including the kings before him, can no longer take the exam.

King Wu, earlier and more commonly known as Zhou Wuwang Ji Fa, was the second generation monarch of the Zhou Dynasty, and eventually replaced the Shang Dynasty to establish the Zhou Dynasty. Of course, he is also a real historical figure, no doubt. Replacing the Shang Dynasty is also the result of the efforts of dozens of generations of Li and Zhou people.

Note: The history of Xia Dynasty can't be verified at present, and it has not been recognized internationally. Because there are no unearthed related words and relics to prove its existence. Some historians suspect that it was invented for the Zhou Dynasty to prove that King Wu's attack on Zhou was in line with God's will (because Cheng Tang established the Shang Dynasty by rebelling against Xia Jie, and the plot was similar).