Dà Zhōng​huá

Greater China

大中华 (大中華) Dà Zhōng​huá
Greater China
The region consisting of mainland China, Hong Kong, Macau, and Taiwan, primarily used in financial and economic contexts.
pan-Chinese sphere
All areas globally with a Chinese cultural presence, including Southeast Asia and the broader diaspora in Europe and the Americas.

Sources

Definitions
CC-CEDICT