Eastern Astrology present in VMS

[argo2001]

divisions of astronomical month or year into 28 segments are known in various cultures, e.g., Arabic lunar mansions (which also include the Pleiades).

Yes, I wrote it in the post above. It was used by Arabs, Indians, Chinese, Japanese and some other cultures.

Are there any particular reasons to link f68r3 with the Chinese version, other than the placement of the Pleiades mansion?

Not really, only the chart from 13th century which strikes me as very similar given the inscriptions. Also, from the lunar mansion charts that I've found, the Chinese one is the most similar.

It's most likely not the Indian one, because that one usually has 27 mansions.

It however might be Arabic one, as it's considerably closer to Europe, but I did not find any chart for manzilas from 12-15th century. Those that I did find from 1600s look different.