Number + 面 + 盾
盾 (dùn) is a noun meaning "shield," referring to a piece of protective armor held in the hand. It appears frequently in classical Chinese stories and idioms such as 矛盾 (contradiction, literally "spear and shield").
古代的士兵一手拿矛,一手拿盾。
Gǔdài de shìbīng yī shǒu ná máo, yī shǒu ná dùn.
Ancient soldiers held a spear in one hand and a shield in the other.
这面盾是用青铜做的。
Zhè miàn dùn shì yòng qīngtóng zuò de.
This shield is made of bronze.
博物馆里展出了一面古代的盾。
Bówùguǎn lǐ zhǎnchū le yī miàn gǔdài de dùn.
The museum displayed an ancient shield.