can run in both directions unblockedly
Unimpeded, Chinese idiom, Pinyin is ch à NGX í NGW ú à I, meaning unimpeded passage or circulation; mostly refers to things can go smoothly; also known as "unimpeded". It comes from a series of talks on waves, three talks and a discussion on collecting bronze wares.
The idiom comes from Liang Zhangju's "Langji congtan · Santan · collection of bronze wares" in Qing Dynasty: "that is to say, the common people hold this money to complete the money and grain, but also accept it as an example, and then avoid the second doubt, so that they can go smoothly without hindrance."
can run in both directions unblockedly
rolers squeeze the people to enrich themselves - mín gāo mín zhī