連鑣並軫

连镳并轸
liánbiāobìngzhěn
  1. lit. reins together and carriages level (idiom); keeping exactly abreast of one another
  2. running neck and neck

CEDICT

鑣，馬口所含的鐵環，亦用以指馬。軫，車後橫木，亦為車子的通稱。連鑣並軫比喻並駕齊驅。

重編國語辭典

Entry Composition

1 連 lián
  1. to link
  2. to join
  3. to connect
  4. continuously
  5. in succession
  6. including
  7. (used with 也 yě, 都 dōu etc) even
  8. company (military)
2 鑣 biāo
  1. bit (of a bridle)
  2. variant of 鏢 biāo
3 並 bìng
  1. and
  2. furthermore
  3. also
  4. together with
  5. (not) at all
  6. simultaneously
  7. to combine
  8. to join
  9. to merge
4 軫 zhěn
  1. square
  2. strongly (as of emotion)