心事[xīn shi]
sth. weighing on one's mind; a load on one's mind; worry:
例：好像有什么心事似的
seem to have sth. on one's mind;
了结一桩心事
take a load off one's mind;
说明心事
disclose [say; speak; tell] one's mind;
我把我的心事告诉了他。
I told him what was on my heart.
我国人民有两件心事。
There are two matters of great concern to our people.