ROC govt defence reports on China are not the most reliable, often times they tend to exaggerate the threat a little... and also tend to miss out on things.
In this case, what they're claiming might technically be true, as it is expected that China will be building two carriers at a time, and if DL's hull is 001A, and if JN's 002 has started to construct some of the individual parts for modules for assembly in a few years then in a sense one could say that China is "building" two carriers at a time.
At the very least they got their locations right; Dalian and Shanghai, so that's worth something I suppose.
In this case, what they're claiming might technically be true, as it is expected that China will be building two carriers at a time, and if DL's hull is 001A, and if JN's 002 has started to construct some of the individual parts for modules for assembly in a few years then in a sense one could say that China is "building" two carriers at a time.
At the very least they got their locations right; Dalian and Shanghai, so that's worth something I suppose.