To have a heart of stone; to be hard-hearted or unfeeling, showing no pity or compassion.
尽管她看到寒风中瑟瑟发抖的流浪动物，但她的铁石心肠让她没有丝毫怜悯。
Despite seeing the stray animal shivering in the cold wind, her heart of stone prevented her from feeling any pity.
Era:
Ancient
Frequency:
Antonym:
Story:
In 604 AD, Emperor Yang of Sui, Yang Guang, ascended the throne after killing his father. He ordered Xue Daoheng, the Sili Daifu (an official in charge of inspections), to conduct an assessment of all officials in the empire.
Xue Daoheng's appraisal of Jing Su, the Sima of Weizhou, was: "His heart is like iron and stone, becoming even firmer with age."
The minister Yuwen Shu hoped Jing Su would protect his relatives and friends who committed evil deeds by relying on his influence. However, Jing Su brought them to justice one by one.
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