HSK 7-9
暨
jì连
(literary) and; as well as; (literary) up to; as far as (as in 暨今 "up to now")
新馆暨研究中心同时开放。
Xīn guǎn jì yán jiū zhōng xīn tóng shí kāi fàng.
The new hall and research center opened at the same time.
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Appears across levels (7-9) in the HSK 3.0 word list.