Subject + 重 + Number + Unit
重 (zhòng) means "to weigh" or "to be heavy," used to express the weight of an object or animal. When stating a specific weight, the pattern is typically the subject followed by 重 and then the measurement. It is one of the most common ways to describe weight in Chinese.
这个西瓜重十斤左右,够我们吃了。
Zhège xīguā zhòng shí jīn zuǒyòu, gòu wǒmen chī le.
This watermelon weighs about ten jin, enough for us to eat.
你的行李箱重多少?别超过二十公斤。
Nǐ de xíngli xiāng zhòng duōshao? Bié chāoguò èrshí gōngjīn.
How much does your suitcase weigh? Don't exceed twenty kilograms.
这只小猫才重两公斤,太可爱了。
Zhè zhī xiǎo māo cái zhòng liǎng gōngjīn, tài kě'ài le.
This kitten only weighs two kilograms — so cute!