I Transmigrate to the Great Ming, and My Big Brother Is Zhu Yuanzhang

[Going to his death alone + changing the Great Ming + loneliness + no female lead + an emperor's suspicion + regret]

Li Zian, a modern young man with a knowledge of ancient history, transmigrates to the Great Ming and assists Zhu Yuanzhang in founding the dynasty.

Will this suspicious emperor let Li Zian live out his days in peace, or have his entire family executed, just like Lan Yu's?

The blurb can't do it justice. Please read the novel.