Su Yu didn't believe that the entities in the upper narrative layer would let that place collapse.
"Since my story is fragmentary and too simple, then you can help fill it and expand it for me..."
Su Yu was gambling, betting that the entities in the upper narrative layer would not let it collapse and would surely step in to save the scene.
Of course, the premise is that the collapse caused by Su Yu is significant enough.
So, Su Yu kept writing that one-sentence story, which had no logical sequence, but the content was extremely significant, involving the power to cross narrative layers.
Thus, the resulting collapse would undoubtedly be severe.
The aim was to cause the maximum collapse in the upper narrative layer, potentially even faster than the lower layer's collapse.
Thereby forcing some entities in the upper narrative layer to intervene.
And their way of saving the scene would likely be to rewrite the story.
