Tributary system of China

The tributary system of China (simplified Chinese: 中华朝贡体系; traditional Chinese: 中華朝貢體系; pinyin: Zhōnghuá cháogòng tǐxì), or Cefeng system (册封体制; 冊封體制; Cèfēng tǐzhì) at its height was a network of loose international relations centered around China which facilitated trade and foreign relations by acknowledging China's hegemonic role within a Sinocentric world order. It involved multiple relationships of trade, military force, diplomacy and ritual.

Source: Wikipedia — Tributary system of China (CC BY-SA 4.0)