Which country in East Asia does mainland China still claim as an integral part of the Chinese nation?

Question

Quizplus · Accepted Answer

Mainland China has claimed Taiwan as part of its territory since the Chinese Civil War in 1949, and it continues to exert pressure on the island to reunify with the mainland. However, Taiwan operates independently with its own government, military, and economy, and most of its citizens identify as Taiwanese rather than Chinese.

Which Country in East Asia Does Mainland China Still Claim