The location in the northwest, divination, represents the sky, represents the parents at home, belongs to gold, commonly known as Shoushan, and is prosperous. Northwest wind, biting ice, so the mountain is not high and unreal, does not block the wind and rain, does not release the cold, which is not conducive to vitality and family development. Therefore, the first choice is that the northwest direction should be high, not low, and there should be no road rushing into the river to kill people. If there is a lack of horns or houses in the northwest, it is advisable to put porcupine zodiac objects to supplement the energy in the northwest. So put a piggy bank near the northwest corner and put some coins in the piggy bank.