KIDS playing total war have better history facts than Kinh/Dai themselves...

[Gāokējì]

If you have ever seen a kid playing some total war game they have quite a good grasp of military logistics already.  If they use a unit such as a Mongolian archer on a cavalry they would suffer reduction in their abilities like speed or rate of fire if they are suddenly situated in Vietnamese Kinh/Dai jungle terrain that's not suited for them.

But apparently Vietnamese Kinh/Dai history says that Mongols were undefeated on their cavalry and only the Vietnamese Kinh/Dai warrior skill saved them.

If I were Vietnamese Kinh/Dai, I would feel ashamed for not knowing my own history enough that even a simple video game surpasses my logic and factual knowledge.

[Lel]

Yes, Mongol are water type Pokemon they're weak against leafy green. Gosh, we all know that.

Then Why did your ancestor used rocks and stones to build the Great Wall? Didn't you know rock is weak against elemental water?

Why didn't you use your high Chinese IQ to plant tree around the Great Wall?  Why didn't you?

Your ancestor didn't pay attention or learn a single thing from Dungeon and Dragon.