Dian Mu is the goddess of lightning and wife to the thunder god Lei Gong. Dian Mu can distinguish good from evil with her mirrors and is the goddess of justice for this reason. She creates lightning with two large mirrors and is also known as Tian Mu. Dian Mu personally has a festival held on the sixth day of the tenth month of the lunar year.
Dian Mu was once accidently struck by Lei Gong’s thunder, and due to this strike was killed. She was made the goddess of lightning to help Lei Gong see where to throw his thunder using her two mirrors.