C113 Reverse the World(16)

The scheduled meeting time is 7: 30, and I arrived 15 minutes earlier at the designated location in a deserted alley. This place can't be reached in a straight line. One needs to pass through a corner in the middle. In the shape of "L." If the entrance is the top of L, then my position is the bottom right corner of L. Although this place isn't very far from the street