In Vastu Shastra today, Acharya Indu Prakash reveals what should be kept where according to your moolank, i.e. according to numerology. Mercury is the planet of people with moolank 5 and the north direction is auspicious for them, so they should keep the idol of Lakshmi or Kubera in the north direction of the house.
The planet of moolank 6 natives is Venus and the southeast direction is auspicious for them, therefore, they should keep peacock feathers in the south-east direction of the house.
Ketu is the planet of the moolank 7 natives and the north-west direction is auspicious for them. So people with 7 moolank should keep Rudraksha in the north-east direction of the house.
The planet of moolank 8 natives is Saturn and the west direction is auspicious for them. So the 8 radix people should keep black crystal in the west direction of the house.
The planet of 9 radix natives is Mars and south direction is auspicious for them. So the nine radix natives should place pyramid in the south direction of the house.