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Do not fear strong winds waves; just be sure to row in unison
不怕风浪大就怕桨不齐 is a Chinese proverb that literally translates as: Do not fear strong winds [and] high waves; what [one should] worry about whether or not you're rowing in unison.
Figuratively, this means: However difficult the task, the key to success lies in making collective efforts.
I like to translate this as “Don't sweat the details, just get together and get it done.”