Zhang Weiping searched very carefully just now and was sure that he had not let go of any corner, but how could this figure appear here?

Originally, while Zhang Weiping was searching carefully, the figure came quietly from the door of the laboratory, and did not know what body technique had been applied. So his limbs were open and tightly clinging to the ceiling above the door of the laboratory, just like Spider-Man in the movie!

After going out, Zhang Weiping is ready to go back to the duty room to rest. It is impossible to go back and check again. Anyway, there are people in the monitoring room. All...