With the Qings I made these events you said: after uniting Inner China the player have the possibility to claim Mongolia, Tibet, German Posessions, Macau and Fengtian and get the Fading Sun event so get a loyal Korean puppet and the island of Taiwan. I am now working on a free Formosan Republic which is available to release after you get the island. Maybe if I am done with that I will try to make some events for other Chinese factions too. If you have ideas or made events just post them in the KR forum and it will be included in the next version.
Have already done that in the china section of KR forum, however its a bit chaotic although all events should be working, hopefully there arent too much conflicts with other events or too unrealistic (maybe I have powered up republican china too much).