巧舌如簧

qiǎoshérúhuáng
  1. lit. to have a tongue like the reed of a wind instrument (idiom)
  2. fig. to have a glib tongue

CEDICT

Entry Composition

1 巧 qiǎo
  1. opportunely
  2. coincidentally
  3. as it happens
  4. skillful
  5. timely
2 舌 shé tongue
3 如 rú
  1. as
  2. as if
  3. such as
4 簧 huáng
  1. reed (of a music instrument)
  2. spring; coil