As said before, the plot was always finding ways and opportunities to erase Jiang Li from the surface of the earth.
So when he was walking outside planning to return to the gathering of people in the garden, his heart suddenly started to palpitate and his vision slowly blurred until they blacked out. The world's consciousness took advantage of the fact that his body was drained of energy and low on mana to strike at him. Since he was never part of the story, it naturally wanted his death!
'Damn plot!' Even though he didn't manage to change anything in the storyboard, it still found the fact that he did something to the male lead unforgivable. So it immediately attempted to kill him at the next moment!
It was a last-ditch effort that he evaded the sharp pointed rock which 'mysteriously' appeared on that part of the hallway. And then as he fell unconscious, all that was on his mind were curses targeting the culprit behind his condition.
...