Adjective + 的 + 东西
东西 (dōngxi) means "thing" or "stuff" and is one of the most common general-purpose nouns in Chinese. It can refer to any physical object or abstract item, making it useful when the specific name of something is unknown or unimportant.
你去超市的时候帮我买点东西吧。
Nǐ qù chāoshì de shíhòu bāng wǒ mǎi diǎn dōngxī ba.
When you go to the supermarket, please buy some things for me.
桌子上的东西是谁的?
Zhuōzi shàng de dōngxī shì shéi de?
Whose things are these on the table?
搬家的时候才发现家里有这么多东西。
Bānjiā de shíhòu cái fāxiàn jiā lǐ yǒu zhème duō dōngxī.
Only when moving did I realize there were so many things at home.