With the ancient city of Kashgar as the core stage, there are maze-like ancient streets, bustling bazaars, and buildings carrying thousands of years of memory (such as Gaotai residences and Id Kah Mosque), where traditional folk customs blend with modern life. The ancient city hides the secret of the "time secret" passed down by the family, which is related to the history of multi-cultural integration and provides a rich cultural heritage and mysterious exploration space for the story.