Mainland China (Simplified Chinese: 中国大陆; Traditional Chinese: 中國大陸; Pinyin: Zhōnggúo Dàlù), or "Continental China", or simply "the mainland", is a geopolitical term usually synonymous with the area currently administered by the People's Republic of China (PRC).
It does not include:

Taiwan province
special administrative regions (SARs) administered by the PRC
Hong Kong
Macau Capitalisation
The uncapitalised form, 'the mainland', is preferred by some authorities, such as the South China Morning Post. [2]