煉之未定

炼之未定
liànzhīwèidìng
to spend a long time thinking about sth while unable to reach a decision

CEDICT

Entry Composition

1 煉 liàn
  1. to refine
  2. to smelt
2 之 zhī
  1. (possessive particle, literary equivalent of 的 de)
  2. him
  3. her
  4. it
3 未定 wèidìng undecided; indeterminate; still in doubt