山上无老虎，猴子称大王。

When there is no tigers in mountains, the monkey becomes the king.

Source: Tatoeba

Sentence Composition

1 山上 Shānshàng
  1. (～區) Shanshang (a district of Tainan, Taiwan)
  2. Shanshang (a district of Tainan, Taiwan)
  3. an orthographic borrowing of the Japanese surname 山上, Yamagami
=2 无 mó used in 南無 nāmó
=2 无 wú
  1. not to have
  2. no
  3. none
  4. not
  5. to lack
  6. un-
  7. -less
3 老虎 lǎohǔ tiger

classifier: 隻
4 猴子 hóuzi monkey

classifier: 隻
5 称大 chēngdà to put on airs; to give oneself airs
=6 王 Wáng surname Wang
=6 王 wáng
  1. king or monarch
  2. best or strongest of its type
  3. grand
  4. great
=6 王 wàng (literary) (of a monarch) to reign over (a kingdom)