A pair of Cathyan Oxen helps to pull a Grand Cannon into place as depicted in Total War: Warhammer III.[1]
Cathayan Oxen are used by Grand Cathay's armies as beasts of burden, especially to carry artillery pieces such as the Fire Rain Rocket and the Grand Cannon to war, pulling these guns to battle from the city walls and Great Bastion they usually inhabit. The oxen pulling the artillery allow it to be more mobile than its counterparts from other realms that make use of similar, blackpowder artillery.[1]