Meaning of dāng zhōng:
dāng zhōng
当中
Preposition
among
Zài zhè qún háizi dāngzhōng, tā shì zuì cōngmíng de.
在这群孩子当中,他是最聪明的。
Among these children, he is the smartest.
Adverb
in the middle
Tā zhàn zài liǎng gè rén de dāng zhōng.
他站在两个人的当中。
He stands between the two people.
Noun
in the center
Fáng jiān de dāng zhōng yǒu yī gè dà huā píng.
房间的当中有一个大花瓶。
There is a large vase in the center of the room.