Ideographic: The top 颠 of a mountain 山; 颠 also provides the pronunciationRadical:

meaning for diān:

  • - summitsummit
  • - apex
  • - pinnacle (of one's career etc)
  • - peak (of a civilization etc)summitLangfeng Mountain
  • - same as Langyuan 阆苑 paradise, home of the immortals in verse and legends