Fetching details from the dictionary...
mainland China
中国大陸は広大な国土を持つ。
Mainland China has a vast territory.
中国大陸では様々な文化が発展してきた。
Various cultures have developed across mainland China.
台湾と中国大陸の関係は複雑な歴史的背景を持つ。
The relationship between Taiwan and mainland China has a complex historical background.