十指连心 (shí zhǐ lián xīn): Each finger is linked to the heart. Describes the deep — Meaning & Stroke Order

Seeing her little sister fall, the elder sister immediately ran over to help her up—truly, ten fingers connected to the heart.

Parents' love for their children is like ten fingers connected to the heart—it can never be severed.

Although my elder brother works far away, every time he faces difficulties, the whole family feels it—ten fingers connected to the heart.

Upon hearing that her son was injured, the mother couldn't sleep all night—truly, ten fingers connected to the heart.