After I modified ForceEditablePDFs to TURE, I now generally use the OCR function that comes with DT4, but I found another problem (do I need to create a new topic to discuss?)
After using DT4 for OCR, I imported it to DTTG 3 & 4 and found that the Chinese text could not be selected for annotation, but the English text could be selected. In DT4, both Chinese and English can be selected and annotated normally after OCR.
Then I tried to OCR files containing Chinese and English in DTTG 4, and there was also a problem.
Situation 1: OCR settings turn on Chinese + English
English can be OCR normally, and Chinese will be OCR to the English alphabet.
Situation 2: OCR settings only open Chinese
Unable to OCR normally
In DTTG 3, the settings like Situation 1, OCR can be done in Chinese normally. Although the effect is mediocre, it is feasible.