I Told You to Wreak Havoc in Beimang, Not Lead Your Troops South!

[Not a wish-fulfillment story, no System, no transmigration. Fans of wish-fulfillment stories, please beware!]

After the Great Qian dynasty suffers defeat, Ji Dagen is forced to head north and assassinate the Northern Mang king, Mu Yanlie, in order to sow chaos in the Northern Mang kingdom.

But the Northern Mang king is so powerful that he turns the tables and gets Ji Dagen under his thumb...

Caught between two sides, Ji Dagen's mind works fast. Almost by accident, he wins over the Northern Mang princess, then accidentally recruits a million Northern Mang cavalrymen...

Watching the Northern Mang army surge south, the Great Qian emperor completely loses it:

I told you to wreak havoc in Northern Mang! Who said you could come back and attack your own country!