
Now what's really interesting about this is how it reflects the astrology of the Brahma Horanavagraha, which also introduces the Indian "shadow planets" of Rāhu and Ketu (there are nine graha or luminaries are the five visible planets, sun, moon and the two shadow planets), though they're not depicted here (possibly due to damage or they might have been omitted).
This is a really beautiful example of Indian-Chinese syncretism during the Tang Dynasty.


