Who Squashed the Sun?

Yang Yifan woke up to find that the world seemed to have changed. The supermarket clerk spoke in stilted, robotic bursts. Cars crawled along the road, so light they looked as if a gust of wind could carry them away. Buildings on the street could be seen from one side, yet vanished into thin air when he walked around to the other. Meanwhile, the news reported strange creatures and bizarre events appearing all over the world. “What on earth is going on?” Yang Yifan thought the sunlight was especially harsh today. He looked up at the sky, only to see that the sun had turned into a picture, like a brightly colored watercolor scribble from an elementary school art book. “Who? Who flattened the sun?” [Sci-Fi Mystery] + [Time Travel] + [Infrastructure Building] + [Black Technology]