Your latitude is 38 degrees. On the solstice in winter, the incident angle of the sun is about 40 degrees (the tropic of cancer is 43 degrees). The front 10 floor is almost 25-30 meters high. The shadow length of the building in front is x, tan 40 = 25/x, and x is counted as 30 meters. The distance between buildings is almost 30 meters, so other buildings will not be affected.

This is for reference only.