It's clear that Shibashou and all 4 of the Seika Generals we've seen are very experienced in warfare.
But... who did they get the experience against?
We know that Qin was unaware of the power of Seika before Kansaro and Jiaga crushed that army, we know that Ordo had no there was a "sleeping tiger" so close to Yan, and Jiaga claimed that northern Zhao was too cold, so I doubt they fought up north against the-