heartstrings
noun [ plural ] uk/ˈhɑːt.strɪŋz/ us/ˈhɑːrt.strɪŋz/
pull, tug, etc. at the heartstrings 触动心弦
to cause strong feelings of love or sympathy
It's the story of a lost child - guaranteed to tug at the heartstrings. 这是一个关于走失儿童的故事——肯定能打动人心。