The gap between the two buildings you mentioned is called Tianzhansha. Tianzhansha generally requires the building to be more than five stories high. If it is too low, it will not be considered.
The principles for resolving the Heavenly Killing Evil are: 1. Avoidance is the best;
2. Double-horned Pixiu, Five Emperors’ Money, etc. can be used to resolve it;
3. This The effect of eliminating evil spirits is average.