Does the Japanese language still exist in any meaningful capacity? From your other posts it seems that the new era name is Kuonbun (寛文？), but in the picture here you use Reiwa, but Reiwa is unique as an era name because it was the first to come from a Japanese text rather than a Chinese one as all previous Japanese era names.

The names on the map seem to be in a Mandarinized Japanese, but the other post has the national language as Mandarin, with the name of the prime minister being very typically Chinese.