{Male protagonist's POV, romance, one-on-one pairing, the male lead is the author's beloved son, feel-good power fantasy}
The writing is amateurish, and some parts may not make sense. If that's not your thing, don't force yourself to read it.
World 1: Story of Minglan (paired with Mo Lan) √
World 2: Ultimate Note (no pairing) √
World 3: The Lost Tomb (unrelated to the original plot, paired with Xiu Xiu) √
World 4: The Lost Tomb + Love O2O (paired with Bei Weiwei), to be continued
World 5: Late Qin Dynasty (set in an alternate world modeled on the final years of the Qin Dynasty), with a pairing
World 6: The Lost Tomb + a continuation of Love O2O in a new world √
World 7: Ming Dynasty (no pairing)
Each world can be read on its own and is mostly independent of the others. If there's a setting you'd like to see, feel free to discuss it in the comments.