After Gaia was born, Uranus, the god of the sky, was born from her fingertips, the first generation of God King. As a symbol of the sky, he completely overlaps with Gaia, the god of the earth. Although Uranus is from Gaia, he shouldn't have been born Gaia's son.
Uranus is similar to Gaia's creation. As the sky, it is a systematic copy of Mother Earth itself, appearing as her opposite. Uranus represents the male sky, and Gaia represents the female earth. The combination of these two powerful forces is also the beginning of sexual reproduction.
Gaia gave birth to twelve titans, three giant eyes and three limanni. The twelve titans are the second generation gods, and Zeus is the third generation god. Gaia is the grandmother of the gods on Mount Olympus and the source of divine power and blood.
Besides Uranus in the sky, Gaia also created Puntos, the god of primitive sea, and Ourea, the god of mountain. The combination of Gaia and Puntos produced five gods, symbolizing the different attributes of the ocean.
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As the primitive god of the sky, Uranus dominates the whole sky. He wraps the whole earth every night, and the two completely overlap. Uranus does nothing but have children with Gaia, and binds himself and Gaia's children to the earth.
Finally, Gaia couldn't stand it any longer. She instigated the twelve titans to rise up against her father, and the youngest son, Cronus, helped her mother to overthrow Uranus, thus becoming the second generation God King.
This is also the beginning of the overthrow of the father by the son in Greek mythology. Later, Cronus was afraid of being overthrown by his own children, swallowed all the children, and was finally overthrown by his youngest son Zeus. Zeus, who became the third generation God King, was also afraid that his children would one day overthrow his rule, and directly swallowed Metis, the goddess of wisdom who predicted that she would give birth to poros, the god of opportunity, which is also the reason why Athena was born from Zeus.
This allusion to the eternal power struggle between father and son in Greek mythology is also applied to the game "God of War" series, in which Kratos, the protagonist, explains the process of overthrowing his father Zeus.