Idea for Chinese Lord of the Rings.
Uses elements of Chinese mythology, martial arts, weapons, tombs, Feng shui, etc to create an original universe. Essential the greatest hits of Chinese culture such as Tolkien used Pagan and Christian culture.
In this world, demons, other races and barbarians makes it a busy and often dangerous place for humans. There are minor nations, barbarians, and tributaries surrounding the usually protagonist dynasty. To the very north is the endless tundra, the very west the endless deserts, the very south the endless jungle and the very east the endless sea. Heaven is above and hell is below. There is also the parallel spirit world.
The ruling Dynasty has armies and departments to deal with these dangers, but when shit hits the fans and a high level threat appears, they summon help from Gods but those come at their own whim and when the dynasty has enough favor and is resource intensive (perhaps requires human medium that dies at the end). Gods are large, imposing and frightening for your average human. I.e. Erlang is like 10 feet tall. Also they don't give AF about collateral damage.
High level human or non-human warriors of legendary skills can ascend to Gods or fall into Demonhood.
The infinite struggle is between periods of chaos and periods of peace. Period of chaos is caused by demons resulting in supernatural disasters, loss of favor with the gods, and dynasty collapse, where as period of peace is when new heroes arrive to end the period of chaos and establish a new dynasty. Occasionally heroes can prevent the fall of a dynasty themselves.
Difference between these property and Star Wars LOTR is that this will be setup to have indefinite number of sequels. As the director can always come up with a new ancient threat, barbarian threat, etc per movie.
Now I think of it this is basically Cathay from Warhammer fantasy lol.