I remember that Bubazi weren’t heavily armored infantry using two-handed swords. They were trekkers, more like fast shock infantry, fighting with one-handed swords instead.
If you’re going to use their original term in historical record, then based on Mandarin pronunciation, 潑喜 should be poxi, not boxi. It would be fine to me if it’s simply called Camel Trebuchet or Camel Catapult, I think that’s both easy to understand and fitting.
It depends on what the effect actually is. If it’s very gimmicky, then maybe making Iron Hawk a unique cavalry unit outright would be easier for people to accept than giving the civ regular Knight with some fancy special ability.
If we want to reflect the historical description, then maybe Iron Hawk could have an ability where, even after being killed (HP drops to 0), it can still move, attack, and take damage for 1 or 2 seconds, reflecting the description that even if the rider was dead, he wouldn’t fall off the horse and the horse would keep charging since the riders’ weapons and armor had been shackled to the horses. Such an ability might be too gimmicky for regular Knight.
I’d suggest a unique tech called “Alxa Camels," like the Maghrabi Camels. The Alxa Plateau was historically the main producer of Bactrian camels for the Western Xia and even modern China. This UT should provide upgrades for Camel Riders and Camel Catapults.
By the way, it’s not just camels, they also had other distinctive features that could be reflected in the tech tree. Maybe they could research Arbalester and Heavy Camel upgrades as early as the Castle Age (though some of their stats would be reduced at that stage.) Maybe they could access Bombard Cannon and Bombard Tower, and perhaps make the Bombard Tower tech free (if the Koreans have free arrow tower upgrades only.)
The strength of the Xi Xia army was actually based on its high emphasis on resource use and management, such like the system requiring all men to serve made full use of the population; strict official control over livestock, horses, and camels; investments in innovation, developing “Divine Arm Crossbow” (a type of strong crossbow with a stirrup), the mobile trebuchet mounted on camels, and possibly even the earliest form of bronze cannon.
Why choose a bunch of mounds when there may be better options?
The One Hundred and Eight Stupas are so cooooool.