Meaning of xiǎo zǐ:
小子
(literary) youngster; (old) young fellow (term of address used by the older generation); (coll.) boy; (derog.) joker; guy; (despicable) fellow
Nà gè xiǎo zi zǒng shì rě má fan.
那个小子总是惹麻烦。
That youngster is always causing trouble.
Zhè gè xiǎo zi hěn cōng míng.
这个小子很聪明。
This young fellow is very smart.
Zuótiān wǒ kàndào yīgè xiǎo nánhái diàole bīngjīlíng, nà shì yīgè kělián de xiǎozi.
昨天我看到一个小男孩掉了冰激凌,那是一个可怜的小子。
Yesterday I saw a little boy drop his ice cream; he's a poor little chap.
Zhè ge xiǎo zi yǒu diǎnr wánpí.
这个小子有点儿顽皮。
This joker is a bit naughty.
Nà gè xiǎo zi zǒng shì hé wǒ yīqǐ tī zúqiú.
那个小子总是和我一起踢足球。
That guy always plays soccer with me.
Zhè gè xiǎo zi zhēn lìng rén tǎo yàn.
这个小子真令人讨厌。
This fellow is really annoying.
(old) I, me (used in speaking to one's elders)
Zhè gè niánqīng rén shì gè cōngmíng de xiǎozi.
这个年轻人是个聪明的小子。
This young man is a clever lad.