精誠所至，金石為開

精诚所至，金石为开
jīngchéngsuǒzhì,jīnshíwèikāi
  1. lit. metal and stone yield to power of sincerity (idiom)
  2. fig. no difficulty is insurmountable if one is sincere

CEDICT

Entry Composition

1 精誠所至 jīngchéngsuǒzhì no difficulty is insurmountable if one is sincere (idiom)
2 金石 jīnshí
  1. metal and stone
  2. fig. hard objects
  3. inscription on metal or bronze
3 為 wèi
  1. because of
  2. for
  3. to
4 開 kāi
  1. to open (transitive or intransitive)
  2. (of ships, vehicles, troops etc) to start
  3. to turn on; to put in operation; to operate; to run
  4. to boil
  5. to write out (a prescription, check, invoice etc)
  6. (directional complement) away; off
  7. carat (gold)
  8. abbr. for Kelvin, 開爾文 Kāiěrwén
  9. abbr. for 開本 kāiběn, book format