What is the difference between qi deficiency and kidney deficiency?

Qi deficiency refers to the weakening or decline of some functions of the body caused by insufficient primordial qi, resulting in various sub-health symptoms of the body. Qi deficiency includes lung qi deficiency, kidney qi deficiency, spleen qi deficiency, heart qi deficiency, etc. Kidney deficiency refers to deficiency of kidney essence or yin and yang deficiency, kidney deficiency includes kidney yin deficiency, kidney yang deficiency and kidney qi deficiency.