Qiu Ning discovered that he needed to fuse different worlds together, such as incorporating JoJo's Bizarre Adventure and Demon Slayer into the Nasuverse.
Then he suddenly realized that he could do more than fuse stories from other worlds: he could also send characters from his own world to other worlds.
And so he began the work of fusing different worlds, connecting them, and "dispatching" "transmigrators" to other worlds.
Fusion progress: JoJo's Bizarre Adventure Part 1 (in progress) -- Demon Slayer (in progress) -- JoJo's Bizarre Adventure Part 2 (pending) --
Special linked worlds: Yu-Gi-Oh! Duel Monsters (Yugi Muto/Yami Yugi, Seto Kaiba) -- Deadpool