2 sentences for 心肝 (xīn​gān)

1. 她是父母的心肝宝贝。

   tā shì fù​mǔ de xīn​gān bǎo​bèi.

   She is the apple of her parents' eye.

   Source: Dong Chinese Dictionary

2. 你做出这种事，真是没心肝。

   nǐ zuò​chū zhèi zhǒng shì, zhēn shì méi xīn​gān.

   Doing something like that shows you are truly heartless.

   Source: Dong Chinese Dictionary