The protagonist has a weak presence (he disappears later on), and the main and secondary plots are connected to the author's previous book, so it doesn't matter if you haven't read it.

Timeline: Collapse: The time is before the 2.0 main line and after the 1.6 main line

Collapse 3: In the third collapse, the three families were taken to Hyperion and returned to St. Freya Academy

On the bustling streets of New Eridu, the light and shadow advertisements for the rope net flashed non-stop. Ling was weaving through the bustling crowd, preparing to head to her next commission. Suddenly, the people around her exclaimed in surprise. Ling looked up and saw that the large screen on the rope net, which usually broadcast various entertainment news and highlights of the hollow exploration, was now showing a strange live broadcast interface.