Zhu Yuanzhang: My second son is invincible!

[Invincible Flow + Mythical Ming Dynasty + Doting Brother + Character Development]
Reborn into the Ming Dynasty, I became Zhu Yuanzhang's second son, Zhu Hui, who had been missing for twenty-two years.
Good news: I have inherited Xing Tian's power and his axe and shield; no one in this world can withstand a single blow from my axe.
Bad news: My older brother found out and wants me to work 996...
After returning to Beijing, I realized:
My father, Zhu Yuanzhang, was a true dragon among men who cultivated the three paths simultaneously.
My elder brother, Zhu Biao, is a seemingly kind but actually ruthless and cunning prince.
So, this is the mythical Ming Dynasty...
Zhu Yuanzhang patted my shoulder: "Second brother, beat up the Northern Yuan, Japan, Timur... one by one. If you need money, ask your brother."
Zhu Biao smiled and handed over the tiger tally: "Second brother, go ahead and fight. If the sky falls, I'll hold it up for you."
Years later, standing atop the Pantheon in Rome, looking down at the prostrate envoys from all nations, I turned back, somewhat bewildered:
"Father, elder brother, now that Earth is over, is there anything else?"