To persevere in doing something persistently, without giving up.
持坚持；恒恒心。长久坚持下去。
清·曾国藩《家训喻纪泽》尔之短处，在言语欠钝讷，举止欠端重，看书不能深入，而作文不能峥嵘。若能从此三事上下一番苦功，进之以猛，持之以恒，不过一二年，自尔精进而不觉。”
She kept practicing the piano every day, showing her ability to "chí zhī yǐ héng" in learning.
Learn the next connected idiom: 持之以恒 (chí zhī yǐ héng) → 恒河沙数 (héng hé shā shù)
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