Shash!! You are exactly right. How did you get away with that? Agoracom wouldn't allow me to paste the Pin Yin, and you did, including all the correct tone marke. I am envious!! Cha1o ji2 by itself is also kind of a slang and short for "supermarket", like a big grocery store. Thanks, Shash!!
Shash: chāo jí guāng zǐ