力透纸背 Strength penetrates the paper
Explanation
形容书法刚劲有力，笔锋仿佛要穿透纸背；也形容文章或诗歌立意深刻，语言精炼，很有感染力。
Describes calligraphy as powerful and penetrating, as if the brushstrokes were piercing the back of the paper; also describes articles or poems as profound, concise, and impactful.
Origin Story
话说南宋大诗人陆游，一生写下无数诗篇，其诗词风格豪放，气势磅礴，意境深远。据说，他写诗作词时，常常挥笔疾书，笔走龙蛇，力透纸背，字里行间都充满了激情和力量。他笔下的诗歌，如同黄河之水，奔腾不息，充满着生命力。他的诗作常被后世文人称赞，认为其诗词“力透纸背”，其艺术造诣之高深，令人叹为观止。后人为了纪念陆游的伟大成就，将其故居建成了博物馆，供人们瞻仰学习。
It is said that Lu You, the great poet of the Southern Song Dynasty, wrote countless poems and lyrics in his lifetime, and his poems and lyrics are characterized by their unrestrained style, majestic momentum, and profound artistic conception. It is said that when he wrote poems and lyrics, he often wrote with great enthusiasm, his brushstrokes dancing like dragons and snakes, penetrating the back of the paper, and his passion and strength permeating every word and line. His poems, like the Yellow River, surged endlessly, full of vitality. His works were often praised by later literati, who considered his poems and lyrics to be "penetrating", and the depth of his artistic attainment was breathtaking.
Usage
用于形容书法或文学作品的艺术造诣高深，笔力雄健，感情真挚。
Used to describe the profound artistic accomplishment, strong brushwork, and sincere emotions of calligraphy or literary works.
Examples
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他的书法力透纸背，令人叹为观止。
tā de shūfǎ lì tòu zhǐ bèi, lìng rén tàn wéi guān zhǐ
His calligraphy is powerful and penetrating, it's breathtaking.
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这篇文章立意深刻，力透纸背，读来令人回味无穷。
zhè piān wén zhāng lì yì shēn kè, lì tòu zhǐ bèi, dú lái lìng rén huí wèi wú qióng
This article is profound and impressive, it's very thought-provoking and leaves the reader wanting more.