Cantonese: Wu Leigong is far away, which means far away. Does anyone know how this sentence comes from and what does Wu Leigong mean?

Wu Leigong should be far away. According to the story told by the older generation of Guangdong children, lightning was given by the "Lei Gong" in the sky. Before it thunders, you can see the lightning in the distance on the horizon. After the horizon, there will be no "Thunder Lord". Tong Lei Gong is far away, which means far away.