坚韧

堅韌
jiānrèn
  1. tough and durable
  2. tenacious

CEDICT

Entry Composition

1 坚 jiān
  1. strong
  2. solid
  3. firm
  4. unyielding
  5. resolute
=2 韧 rèn variant of 韧 rèn
=2 韧 rèn old variant of 韧 rèn
=2 韧 rèn
  1. annealed
  2. pliable but strong
  3. tough
  4. tenacious