Guys, look what I found! 😂 The Nanwu family tree is starting to make sense now. Three romances, one universe, and everyone's somehow connected!

you're welcome! ❤️ yeah, that's how i understood the connections too:

fu zhengchu and sang zhi: former schoolmates; he had a crush on her

fu shize and fu zhengchu: uncle and nephew

sang yan and sang zhi: older brother and younger sister

sang yan and duan jiaxu: close friends and former college roommates