暗中疏通àn zhōng shū tōng

persuade secretly;get in touch privately with; mediate between two parties privately
❍ 凡在驻防地的弟兄，均应事先～，如遇饥民事变，在被迫不得已时，只许朝天开枪。(李六如《六十年的变迁》 Ⅰ—158) All soldiers of the garrison units should be secretly persuaded beforehand not to open fire on the starving peasants but,when forced to do so in case of riots,they should fire into the air.
❍ 旅汉湖南商会，他有些相熟的，要他暗中去疏通一下。(李六如《六十年的变迁》Ⅰ—164) He has some acquaintances in the Hunanese Chamber of Commerce in Hankou;we’ll ask him to get in touch privately with those people .