“Saoquing Niang’s themes are weather, harvest, and hope. Her symbols are rain, clouds, stars (or light) and brooms. Known as the Broom Lady in the Far East, Saoquing Niang lives among the stars, sweeping away or bringing rain clouds, depending on the land’s needs. From a spiritual perspective, Saoquing Niang’s moisture fills us with refreshing hope when our soul is thirsty.
A traditional rain ceremony in Laos, Bun Bang Fai is very ancient and ensures a good harvest. It includes all manner of festivities, such as fireworks that carry people’s prayers into the sky. In keeping with this, if sparklers are legal in your area, light one or two and scribe your wishes with light for Saoquing Niang to see.
For weather magic, tradition says that if you need Saoquing Niang’s literal or figurative rains, simply hang a piece of paper near your home with Her name written on it (ideally in blue pen, crayon, or marker). Take this paper down to banish a tempest or an emotional storm.
To draw Saoquing Niang’s hope into your life, take a broom and sweep your living space from the outside in toward the center. You don’t actually have to gather up dirt (although symbolically getting rid of ‘dirt’ can improve your outlook). If you like, sing ‘Rain, rain, go away’ as you go. Keep the broom in a special place afterward to represent the Goddess.”
(Patricia Telesco, “365 Goddess: a daily guide to the magic and inspiration of the goddess”.)
“Sao Ch’ing Niang Niang is the Chinese Goddess of good weather. Also known as the ‘Broom Lady’, She resides in the Broom-Star, Sao-Chou, and sweeps the clouds. She sweeps them in when rain is needed and out when it is not. Farmers often hang pictures of brooms on their fences when in need of Sao Ch’ing’s services. Her name, which literally means ‘broom Goddess’, is also seen as Sao Ch’ing Niang, Saoqing Niang, Sao Ching Niang Niang, and Sao-Ts’ing Niang”. 
Sabrina. Goddess A Day, “Sao Ch’ing Niang Niang“.
Harmony Home, “Broom or Besom“.
Her Cyclopedia, “The Goddess Sao-Ts’ing-Niang“.
Lady of the Earth, “The Care and Feeding of the Wicca Broom“.