效忠

xiàozhōng
to vow loyalty and devotion to

CEDICT

to pledge one's loyalty to

Wiktionary

全心效力，忠貞不二。

重編國語辭典

Entry Composition

=1 效 xiào variant of 傚 xiào
=1 效 xiào to imitate (variant of 效 xiào)
=1 效 xiào variant of 效 xiào
=1 效 xiào
  1. effect
  2. efficacy
  3. to imitate
2 忠 zhōng loyal; devoted; faithful