Meaning of dàng zhēn:
dàng zhēn
当真
Verb
to take seriously
Nǐ kě bùyào dàngzhēn tā shuō de huà.
你可不要当真他说的话。
You shouldn't take what he says seriously.
Adjective
serious
Tā shuō de huà ràng wǒ hěn nán xiāngxìn, tā shìfǒu dàng zhēn?
他说的话让我很难相信,他是否当真?
What he said is hard for me to believe, is he serious?
Adverb
No joking, really!
Nǐ shuō de shì zhēn de ma? Wǒ yīnggāi dàng zhēn ma?
你说的是真的吗?我应该当真吗?
Are you serious? Should I really believe it?