[wan2 qiang2] /tenacious/hard to defeat/
  [wan2 qiang2] /standhaft, beharrlich, erbittert, hartnäckig, eisern, zäh (u.E.) (Adj)/
  [wan2 qiang2] /opiniâtre/ferme/
 [がんきょう] /(adj-na) (1) stubborn/dogged/persistent/tenacious/(2) tough/sturdy/hardy/strong/(P)/EntL1217660X/
Visszatérés a(z) „頑強” laphoz.