The window of the house on the second floor faces the street. How about Feng Shui?

That depends on whether the street comes straight to the window or parallel to it.

If you go straight ahead, and the road is long and there are many cars, then Feng Shui is not good.

Come straight because of suffocation, unless you never open the window.

If they are parallel, it doesn't matter. Noisy at night at most.