one 's heart flutters like a pennant in the wind
Banners, flags in mid air. Heart like a flutter, pronounced x ī NR ú Xu á NJ ī ng, is an idiom to describe restlessness. It's from Chu CE I, Warring States strategy.
[explanation] describes being restless. [source] "Chu CE I of Warring States strategy:" I'm not comfortable eating, and my heart is shaking like a hanging banner, but nothing ends up thin. " [usage] as the predicate; refers to being restless. Restlessness
one 's heart flutters like a pennant in the wind
seven-pace talent-literary talent in ready play - qī bù zhī cái
nature 's justice and human feelings - tiān lǐ rén qíng
release a tiger to protect oneself -- to bring trouble on oneself while attempting to avoid it with other means - fàng hǔ zì wèi