To clap one's hands to one's forehead to express great joy, relief, or congratulations; to felicitate oneself.
得知自己顺利通过了重要的考核，他不禁额手称庆，心中的石头终于落地了。
Upon learning that he had successfully passed the important assessment, he couldn't help but clap his hands to his forehead in joy, feeling a great weight lifted from his mind.
Era:
Ancient
Frequency:
Antonym:
Story:
During the Song Dynasty, Sima Guang became renowned for compiling 'Zizhi Tongjian'. He served as a Hanlin Academician and was good friends with Wang Anshi, but he did not support Wang Anshi's reforms. He resigned and went to Luoyang to focus on writing.
When Emperor Zhezong ascended the throne, Sima Guang was recalled to the capital to serve as Shangshu Zuo Pushe (Left Prime Minister), and people expressed great joy and relief at his return.
Upon assuming his post, Sima Guang promptly moved to abolish the new policies, a decision that is said to have deeply upset Wang Anshi.
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