It was filmed in Europe and the United States. It was a movie about the love between elves and humans. I hope those who like movies can tell me the name of this movie!

This is a movie I watched on CCTV-8 when I was young. I don't know if it's a TV series, but I can't remember the name. I've regretted it for many years. I really like this movie!
[Movie summary: A man goes to a new city for work. He finds an elf living in his new home.]
(Dwarves and elves are palm-sized. They can turn invisible, like to drink, and have a good relationship with the Ents. They use wooden staffs as weapons.)
The man fell in love with a woman in the new city, and the son of the elf family who lived in his house also fell in love with the princess of an alien elf (at the ball). Therefore, the elves and humans living in the same family began to help each other in love.
(Alien Elves: Lives in a castle in the sky. It is as big as a palm. It has wings and can fly. It controls the seasons. Its weapon is a magic staff. It claims to be noble and gentlemanly. It looks down on the elves who live with the male protagonist.)
In a horse race by the sea, the man won the race with the help of the elf and won the favor of the woman.
The Dwarf Elf and a few of his friends snatched the invitation letter from a few invited foreign elves to attend the birthday party of the foreign elf princess. A big frog spat out bubbles under the castle, wrapped the few of them, and flew to the castle in the sky (like an elevator...= =）
The few of them played around at the ball, and the [Elf Male Lead] fell in love with the [Princess of the Foreign Elves]. The two of them even…They kissed, and then the male elf could fly after kissing! Although they didn't have the wings of the foreign elves, they could fly! The male protagonist, who was discovered to be an alien elf, immediately fled the castle with his companions.
(I can't remember clearly here) Previously, one of the male protagonist's friends had a duel with a foreign elf (I think it was the princess's brother). The male protagonist's friend died, so he defeated the princess's brother. (After the defeated elf died, his body disappeared bit by bit.)
This ignited a war between the two races, which were already on bad terms. During the war, the princess of the foreign elves went to live with her relatives at the bottom of the sea.
In this movie, there was a woman in black who could turn into an owl. For the time being, she would be called the Grim Reaper. Every time an elf died, she would come and collect the soul of the dead elf.
The elves of the two races were training for war, and the man even helped the dwarves train… =
The elves who could fly were also undergoing war training. They did not manage nature, causing the weather to be unstable and the four seasons to be abnormal...
(It snows in the summer, followed by falling leaves in the fall…)
(I don't remember clearly) The two races of elves have started a war! Many elves died in battle. The male and female elven protagonists stopped the war, and the God of Death (the woman in black) returned the souls and bodies of the dead elves to the two elves. All the unpleasant experiences of the two elves were swept away, and they fused together very amicably!
The man had a girlfriend, the male elf had a foreign princess, and finally, at the ball under the tree, the elves turned invisible in pairs, and the male and female leads snuggled up to each other, HAPPY ending!
Well, that's it…

Answer 1

This was a movie called Estella, directed by the British director Rance who was stillborn. It was released in 2005. The movie was about the love story between a human girl named Estella and an elf boy named Conscience. The movie was very popular with the audience because of its excellent visual effects and music.