to make a complaint or a suggestion to the authorities by letter or by paying a visit
Definitions (Wiktionary)
verb, Mainland-China
to formally petition the government via letter or visit, (now) particularly to local petitioning bureaus or the National Public Complaints and Proposals Administration (國家信訪局)
Definitions (Kaifangcidian)
(沒有對應漢語詞彙)
Definitions (兩岸三地生活差異詞語彙編—Two Shores Three Places)