To express extreme grief and profound gratitude, typically in a ceremonial manner such as prostrating oneself and weeping profusely, often at a solemn occasion like a funeral or in response to a great favor.
在恩师的追悼会上，他泣血稽颡，感谢老师多年来的悉心教诲。
At his esteemed mentor's memorial service, he prostrated himself, weeping profusely as if shedding tears of blood, to express his deep gratitude for years of meticulous guidance.
Era:
Modern
Frequency:
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