Find Ming army with their emperor, Qichen Zhu, as general
Defeat this army [Fires an event]
Beeline straight to Beijing and seige it [Fires another event]
Now just kill Ming armies while waiting for more war score
Take beijing, as many forts as possible, and all their money
Raze all provinces and core
Start annexing Mongolia
Choose confucian as syncretic faith
Embrace feudalism
Cancel alliance with Korchin
Truce break ming when cores are done
Unguarded nomadic frontier disaster could fire here
Take all their money and as many provinces as possible.
Raze and core all provinces
Truce break ming again when cores are done
Again take as many provinces as you can and their money
Buy down inflation slowly
Get some tributaries going
Declare on Ming when truce is over
Either full annex them or ensure no one else has borders with Ming
Don’t take mandate
Forming Yuan-
Get provinces you need to form Yuan
Full annex Korchin, Kara Del
Take provinces from Chagatai, Haixi
Get to 1000 dev by taking more provinces from Chinese breakaway nations, chagatai, uzbek, tibet region
Form Yuan and take their ideas
Yuan and beyond-
Keep following the mission tree
Own all of china to complete Back in Control Achievement
Form Mongol Empire
Ideas-
Aristocratic – for cav combat ability
Humanist
Diplo/influence
Economic
Quality
Oirat has a fairly strong start in 1.29 and forming Yuan is much easier. After forming Yuan its easy to roll over everyone around you with the strong idea set. Hope this little guide helps!