Meaning of zǐ xì:
仔细
careful; attentive; cautious; to be careful; to look out; (dialect) thrifty; frugal
Zuò shìqíng yào zǐxì, zhèyàng cáinéng shǎo chūcuò.
做事情要仔细,这样才能少出错。
You need to be careful when doing things to make fewer mistakes.
Nǐ zài wánchéng zuòyè shí yào zǐxì jiǎnchá.
你在完成作业时要仔细检查。
You should carefully check your work when you finish it.
Tā shì yī gè fēi cháng zǐ xì de rén, zǒng shì zài gòu wù shí bǐ jiào jià gé.
她是一个非常仔细的人,总是在购物时比较价格。
She is a very thrifty person, always comparing prices when shopping.