What exactly were the five elements in the Sino-Japanese War?

September 19th of the lunar calendar is Wu Jianian.

Eight characters: Wu Jia, Yihai, Xu Bing, 1898.

Five elements: wood, fire, wood, water, fire, earth and earth.

Yin Na: Flat wood on Jinshatou fire.

Eight characters and five elements: 0 gold 2 wood 1 water 2 fire 3 soil.

God refers to the four seasons: the sun is dry and the fire is born in autumn. Hi-wood, avoid water, avoid soil.