HSK 7–9 — Advanced Levels of the New HSK 3.0 (page 3)

(char./m.) norm; rule, regulation; (lit.) to imitate; (used for news, writings, etc.) piece, item | (conj.) (indicating sequence) then,...; (indicating cause and effect, condition) (if...,) then...; (indicating contrast)..., while...; (indicating concession) as...as it is | (par.) preceded by 一, 二 or 三, used to list reasons; used as the copula

TOP-500 Frequency The ranking is based on data from open sources. HSK 7-9