閉目養神

闭目养神
bìmùyǎngshén
to relax with one's eyes closed

CEDICT

閉起眼睛，蓄養精神。

重編國語辭典

Entry Composition

1 閉目 bìmù
  1. (literary) to close one's eyes
  2. to close one's eyes
2 養神 yǎngshén
  1. to rest
  2. to recuperate
  3. to regain composure