Meaning of hěn:
hěn
狠
Adjective
determined; resolute; old variant of 很[hen3]; ruthless; fierce; ferocious
Tā zuò shì hěn hěn.
他做事很狠。
He is very determined when it comes to work.
Tā xià shǒu zhēn hěn, bǎ bǐsài de jiéguǒ gǎibiàn le.
他下手真狠，把比赛的结果改变了。
He was really ruthless, and changed the outcome of the match.
Tā shì yī gè fēicháng hěn de rén, zǒng shì háo bù yóuyù de zuò chū juédìng.
他是一个非常狠的人，总是毫不犹豫地做出决定。
He is a very ruthless person who always makes decisions without hesitation.
Verb
to harden (one's heart)
Tā zài bǐsài zhōng duì duìshǒu shífēn hěn.
她在比赛中对对手十分狠。
She was very ruthless towards her opponent in the competition.
