alt Hacker NewsArticle 4. It's actually near the top. You probably missed it because you have to know the history of the constitution to know what Article 4 means. This is the text:
"The territory of the Republic of China within its existing national boundaries shall not be altered except by a resolution of the National Assembly."
The key phrase is "existing boundaries." The constitution was passed in 1947, when the "existing boundaries" of the ROC were very clear: all of China, plus Mongolia.
The constitution says that those boundaries may only be changed by an act of the legislature. There has never been such an act.
> The key phrase is "existing boundaries." The constitution was passed in 1947, when the "existing boundaries" of the ROC were very clear: all of China, plus Mongolia.
Nope, they were never formally defined, not even in legislation.
This flexibility was explicitly acknowledged in the constitutional reforms, when a clear delineation was made between "territory the ROC controls, and mainland territory (which the ROC does not claim)". The constitutional court also addressed the question directly: https://cons.judicial.gov.tw/en/docdata.aspx?fid=100&id=3105... TLDR "the constitution does not define the actual territory."
Thus, the constitution does not represent the ROC claiming PRC territory. Lacking any other Taiwanese claim to the territory (legislation, etc), it's therefore a fact that Taiwan makes no claims whatsoever to PRC territory.