Bronze
noun
Blue copper is bronze. Bronze gets a bluish tint to it, which is why it's a blue copper.
せいどう
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
青銅でコウイチの像を鋳造するっていうのはどうよ。
Why don’t we cast a bronze statue of Koichi?