Circle of Elements in Chinese lore (including Feng Shui).

Green, the productive cycle:

• Fire produces Earth (ashes)
• Earth produces Metal (ore)
• Metal produces Water (condensation)
• Water produces Wood (nourishes)
• Wood produces Fire (nourishes)

Blue, the controlling cycle:

• Fire controls Metal (melts it)
• Earth controls Water (dams it)
• Metal controls Wood (axe)
• Water controls Fire (extinguishes)
• Wood controls Earth (roots)

Red, the reducing cycle:

• Fire reduces Wood (burns it)
• Wood reduces Water (absorbs)
• Water reduces Metal (rust)
• Metal reduces Earth (veins "grow" through it)
• Earth reduces Fire (suffocates)