He clarified the relationships.
First, the Second Tower opened, Alice came to the present world as the vessel of the Crimson Python, leading Su Ming'an into the Shadow's trap.
Then Su Ming'an used the Third Tower to travel back a thousand years, imprinting the sole successful path simulated by the Deity into reality through Time authority to complete the causal connection.
Finally, Su Ming'an traversed through the millennium, began his vacation, and experienced this naturally established only reality.
Therefore, this Alice is essentially not the original Alice, and can be understood as one ten-thousandth of Alice's future. Their differences are like Su Wensheng who did not die by the lake versus Su Wensheng who died by the lake. This Alice is independently derived from the sacrificed Alice - a happy Alice.