Literature Reference: 石麤肆磨砺，波恶厌牵挽。——《南溪始泛三首 一》 The rough stones grind, and the fierce waves loathe to pull and tow. Source from 'Three Poems on the Beginning of Nanxi's Drift, Part 1'.
牵: Guiding, leading the way forward.
挽: To strive to improve or restore the situation: salvage. To turn the tide with great effort.
Meaning: Pulling and towing symbolize perseverance and effort, undeterred by difficulties.