For those of you saying it is just one Chinese CIV, I've added the theory to the OP. There is some credence to the theory.
1. God on the left could be
Shennong, god of herbal drugs. He was one of the Five Emperors counted amongst the Three Sovereigns. He is portrayed with horns, but always short white horns, except for this one statue where he does have bull horns. I'm not sure what the large club in the image could be, but maybe its an agricultural tool. His attire and that leaf he is holding in the image does seem to fit with his description, though.
2. Goddess on the right would still be
Nüwa (aka Nugua), creator goddess who created humans from yellow mud. She is also counted among the Three Sovereigns.
3. God in the center would then be the
Yellow Emperor (aka Huang-Ti), a cosmic ruler god. He is also sometimes counted among the Three Sovereigns. In the image, his attire is not particularly yellow enough. Maybe he's the
Jade Emperor? He still looks middle-eastern to me, but the image is very blurry.
Also, of note, is that some people did work on a
Chinese mod for AoM, but it was never finished. Maybe a deal was worked out with the people involved, sort of like how the Forgotten Empires team had their work made into an official expansion. He are some images of the mod below: