Tortoise is one of the four celestial animals as per Chinese Fengshui and is of great significance in both Vastu as well as Fengshui. Tortoise has a very long life span and therefore it is considered very auspicious and hence it is recommended that a tortoise should be kept at house so that the family members may have a long life. A Tortoise made of Brass also works as a remedial measure for correction of Vastu faults since it has great power to balance the enviromental energy around us as well as removal of negative energy thereby purifying the place where it is kept. This Tortoise can also help in studies if the same is kept on or near your study table. Similarly it can be kept on the office table as well.
Tortoise should be kept in the North direction of the house in a metal plate filled with water. However, if there is a bedroom in the North then the water should not be filled in the plate since water is not desired in the bedroom.