中流砥柱

Explanation: Stands as the pillar of the Yellow River rapids in the same mountain. Strong and independent person analogy in turbulent pillar of a difficult environment to play the role. 　　Usage: Partial official; as attribute, object; with compliment 　　Source: "Spring and Autumn Annals admonished the next chapter," I taste the river from Jun Ji, sea turtle left Can title to being the pillar into the stream. " 　　Results: Pinnacle of Sanmenxia 　　Postscript: Pinnacle of Sanmenxia Thesaurus:  play an indispensable role, Hai Jin Liang frame, able people should do more work