Canis Major is very far down compared with the path of the Sun:

The Bow has 7 stars according to this map. The Arrow needs 2. We can guess why a Chinese emperor would avoid an arrow when he performed the ceremony of drawing the bow. 9 is a 'death' symbol for the Sun (which the emperor personified). 9 means he will be 'turned upside down'.

The map has Orion formed like an hour-glass. Between its upper and lower parts there is a small opening in the midst of which there is a star (Alnilam).

Between Bow and Arrow and Orion we can observe a constellation with 13 stars forming a ring (or hole). 13 as in Roto Iri Are.

The picture of the Chinese star chart comes from Hamlet's Mill.