At first glance at the words "time-space coincidence" and "space-time accompaniment", you may think that this is a plot from a science fiction animation or romance novel. However, some Chinese people were so frightened by these few words that they were either unable to enter the restaurant suddenly, or went to the isolation center. It turns out that these new words "space-time system" are new terms for epidemic prevention invented by the Chinese government in October. These new words, which seem to have sci-fi popular database stalks and romance, were finally summed up by some talented Chinese people into a concise and comprehensive noun: "space-time connection". Xiaodong (pseudonym), a young man from Beijing who went to Shanghai on a business trip in late October, became the object of being "connected by time and space". In a foreign land where the timing was completely unexpected and the location was completely unknown, I was surprised, angry, dumbfounded, and finally reluctantly stayed in the isolation center for 15 days before returning to Beijing. At that time, Xiao Donggang negotiated a large-scale cooperation project in Shanghai. Near noon on October 28, he took the G14 high-speed train back to Beijing. Because he was in a good mood and didn't eat breakfast, he took a long time to buy the most expensive lunch box, a whole cookie and drink. go to sleep.