金块

dāng tā dǎ kāi zhè kuài bù shí lǐ miàn shì yī gè dà jīn kuài

当他打开这块布时，里面是一个大金块。

When he opens the piece of cloth, a large gold nugget is inside.

tiān rán de jīn kuài

天然的金块

a gold nugget