塞翁失馬，焉知非福

1.When the old man on the frontier lost his mare, who could have guessed it was a blessing in disguise?

2.A loss may turn out to be a gain.

3.Blessing or Bane

4.Misfortune may be an actual blessing

5.Every cloud has a silver lining

6.Behind bad luck comes good luck

7. No gains without pains