What Do You Mean We Are the Fourth Natural Disaster?

"Professor Su, I am Lao Zheng from the National Quantum Laboratory Emergency Coordination Team." The voice on the other end of the phone was restrained but urgent. "Our quantum observation station here has produced a set of data - abnormal space curvature. It is not regular space curvature. The technician on duty said that he has never seen such readings." "What kind of reading?" "It seems like something - in space - is approaching us."