Literally the same source you provided:

Before 1949, the government of the Republic of China (ROC) issued a large volume of long-term sovereign gold-denominated bonds, secured by Chinese tax revenues

Last I checked, the ROC still exists and is still China. For example, the ROC still claims the 7-dash line (the line most people acknowledge as being a Chinese claim). The ROC is still a country. Saying otherwise would suggest that the ROC and the PRC are the same... Which is something so silly not even the PRC claims as such.