Bìyè yǎnjiǎng zhōng tā yǐnyòng le 'yīngjīchángkōng', gǔlì tóngxué men zhuīzhú lǐxiǎng.
In her graduation speech she quoted 'the eagle strikes through the sky' to encourage classmates to pursue their dreams.
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From Mao Zedong's 1925 ci poem 沁园春·长沙: 鹰击长空,鱼翔浅底,万类霜天竞自由 ('Eagles strike through the vast sky, fish glide along the shallow bed — all creatures vie for freedom under frosty skies'). A staple of Chinese school textbooks.
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Literary / inspirational. Common in graduation speeches, motivational writing, and on calligraphy scrolls. Often paired with 鱼翔浅底 (yúxiángqiǎndǐ) as a couplet.