I have a bond with the river of time

\[Time Traveling\] \[Later Opening\] Once in a coma\, the protagonist finds that he has the ability to travel through time\. The first time he traveled\, he came to the world eight years later\. He discovered that Jiangcheng\, where he had lived for more than ten years\, had turned into ruins\, with wreckage and broken walls everywhere\, as if the end had come\. During the second time travel\, he discovered that high\-rise buildings and peaceful high\-tech cities were destroyed by monsters calle...