Idiom
The curious neighbours were disappointed as the young couple's quarrel was just a storm in a teacup.

brittle situation
fuss about a trifle
quarrel about tea cups
violent quarrel

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Idiom
To plough the sands

To work hard to achieve one's aim
To afford hope or ground for expecting a good result
To advance one's position in life
To busy oneself in a way which cannot lead to any profitable result

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