Subject + 藏 + 在 + Place
藏 (cáng) means 'to hide' or 'to conceal.' It can describe either hiding oneself or hiding an object. For example, 它藏在哪里 means 'where is it hidden.' The character is also pronounced zàng in the word 西藏 (Tibet).
他把礼物藏在衣柜后面。
Tā bǎ lǐwù cáng zài yīguì hòumiàn.
He hid the gift behind the wardrobe.
小猫喜欢藏在沙发下面。
Xiǎo māo xǐhuān cáng zài shāfā xiàmiàn.
The kitten likes to hide under the sofa.
你把钥匙藏在哪里了?
Nǐ bǎ yàoshi cáng zài nǎlǐ le?
Where did you hide the key?