http://www.purifymind.com/WisdomXI.htmStanding beside Maitreya Bodhisattva are the four Heavenly Guardians or Dharma Protectors. They are symbolic guardians of the practitioners of the Buddhist way. Whom do they protect? They protect us by reminding us to educate ourselves and to safeguard the proper knowledge, which we should learn. Each guardian portrays a different aspect of thought or action.
The Four Dharma Protectors hold various objects to symbolize different aspects of the Dharma.
If we regard the Protectors as deities with magical powers who will protect us if we burn incense, prostrate and offer flowers and fruit praying for protection and safety we will be sadly mistaken. This is superstition. All the facilities, images of Buddha and Bodhisattvas and any offerings made are teaching tools designed to inspire our mind and wisdom. They also serve to remind us of the importance of being enlightened instead of deluded, virtuous instead of deviated, pure instead of polluted. These are the three principles of Buddhist teaching and practice.