兩儀

两仪
liǎngyí
  1. heaven and earth
  2. yin and yang

CEDICT

  1. (literary, Chinese philosophy) heaven and earth
  2. (literary, Chinese philosophy) yin and yang
  3. heaven and earth
  4. yin and yang

Wiktionary

天地。

重編國語辭典

Entry Composition

1 兩 liǎng
  1. two
  2. both
  3. some
  4. a few
  5. tael, unit of weight equal to 50 grams (modern) or 1⁄16 of a catty 斤 jīn (old)
2 儀 yí
  1. apparatus
  2. rites
  3. appearance
  4. present
  5. ceremony

Related entries

天地 tiāndì
  1. heaven and earth
  2. world
  3. scope
  4. field of activity
山无棱，天地合，我就跟你走。

I'll go with you when pigs fly.

Source: Tatoeba

皇天后土 huángtiānhòutǔ heaven and earth (idiom)
陰陽 yīnyáng yin and yang
英文中沒有陰陽性並不是因為英國人的文化偏向平等。

The lack of gender in English is not due to the English having a more egalitarian culture.

Source: Tatoeba