Zhè suǒ xuéxiào yǐjīng cóng èrběn shēng wéi yīběn.
This school has been upgraded from tier-2 to tier-1.
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Short for 第一批本科. Chinese undergraduate universities used to be split into 一本 (top tier), 二本, 三本 (now phased out) by gaokao admission batch. Many provinces have merged the tiers since 2019, but 一本 remains shorthand for 'good university.'