Yan Fei restored a three-dimensional terrain map of the Louvre Museum using the Auxiliary Brain, knowing which direction he should head in general. However, the door before him did not exist on the map he restored, and he had not anticipated the two surveillance cameras above it, nor the fact that someone inside was monitoring the area outside the door. Neither the data records nor intelligence reports had ever mentioned a door in this secret passage leading into the museum.
Yan Fei wasn't surprised by the appearance of a door here, since the information he had obtained from the Internet was somewhat outdated. It had been a long time, after all, and changes, such as an additional door, would be completely normal.
Before setting off, Yan Fei had crafted a battle plan specifically for tonight's operation, which included simulations for various unexpected events and the corresponding contingency measures. One of the scenarios included encountering a blocked door en route.