心扉

kòu rén xīn fēi

叩人心扉

strike the responsive chord of somebody

tòng chè xīn fēi

痛彻心扉

feel deep pain

tā xiàng mǔ qīn tǎn lù xīn fēi mǔ qīn shuō huì wú tiáo jiàn de zhī chí tā

他向母亲坦露心扉，母亲说会无条件地支持他。

Her mother, in whom she confided, said she would support her unconditionally.