github.com/adobe-fonts/source-han-serif (These are legally free, cover F3/F4 well, and can be remapped to F1/F2 with font substitution rules.)
If you are seeing "CIDFont+F1" or similar names like F2, F3, and F4, it is important to know that these are not actual fonts you can download cid font f1 f2 f3 f4 free download link
The fluorescent hum of the office was the only thing louder than Elias’s heartbeat. It was 3:14 AM, and the "Final_Final_v2_PRINT_READY.pdf" for the global rebranding campaign had just hit a catastrophic snag. github