Where is the brothel in the scar of Xuanyuan sword?

Because 2L got the wrong answer, let me correct it:

In Luoyang city, the house selling weapons on the west and left is the lower left corner, and the house next to it (with a fortune-telling booth) is a brothel;

The northernmost is Zhang Lie's home;

If you haven't finished this question after 18: 30, I'll give you a screenshot.