Time Difference ER

Emergency doctor Lu Chuan is transferred to the old emergency building of Renhe Hospital, where he unexpectedly discovers that the abandoned Room 7 has a time difference. Patients, researchers, and ordinary people from different eras are brought before him. Lu Chuan originally thought he was only saving lives for people from different times, but he gradually realizes that Room 7 is not just saving patients, but also recovering fragments of human civilization that are about to be lost. As nineteen mysterious pieces of knowledge are pieced together, he finally discovers that this time-spanning emergency room is fighting for humanity's last chance to be saved, because a cosmic crisis called Star Tide is approaching Earth.