Where the Sun Rises
The Aztecs describe themselves as “foreigners” to the land they settled.
They came to America on ships, from the direction “where the sun rises”.
According to their own history, they did not come across the Bering land bridge at the last ice age, as modern historians would have it. They came from the East in ships. Due East is Africa.
The fact that Cortez also came from the East in ships is what made them feel he was “returning”.