Why is Tianfu in Fude Palace a disaster?

"Tianfu is in Fude Palace" is an idiom used to describe the situation of disaster arrival. This idiom comes from the myths and beliefs in the traditional culture of China. Fude Palace is a temple in Taoist belief, which worships the god of wealth and the god of fortune. "Tianfu" refers to the place where immortals live, which means blessing and happiness, while "in Fude Palace" means that disaster or misfortune has come to a place that should be auspicious and blessed.