It can be explained separately: "Yi" means a huge quantity, which can be said to be used in large quantities and widely. There is a dialect in the northern Shanxi area "Yi", which means "illumination". Fa: Literally translated in Chinese, it means developed and rich. Fa also has the explanation of development and growth, and it also means giving. Therefore, the combined explanation of the two words can be used as the giver of light. Or give a lot.