They were mages, but the boy was very ordinary. Their father was a great mage, and the enemy was a spy. In the end, they successfully defeated the enemy. I remember the plot of a fantasy novel. The protagonist had two children who were kidnapped. The girl was a genius mage, and the boy was ordinary. Their father was a great mage, and their opponent was a spy. In the end, they successfully defeated the enemy.

It was a fantasy novel, but he couldn't remember the name or the main character. He only remembered some scenes at the end:
The protagonist had two children who were kidnapped. The girl was very talented, but the boy was just average. Because of the protagonist's enemies, they were kidnapped and sent to another planet.
The person who helped the main character was a charlatan or something like the Three Pure Ones of One Breath (I don't know if that's how it's pronounced). It was because someone knocked him down from above. Later, someone called Lie also helped him and taught him a movement technique.
The main character had a few good friends. One was a monk who seemed to have been extremely talented in the past. The other two liked to rob graves. One of them had a weapon called the Netherworld Shovel. After he died, he became an emperor in the Underworld and even found a girlfriend with the help of the main character. The other was also one of the Three Pure Ones. The last one was the reincarnation of Xuanyuan, who had the body of the five elements.
There was also one who became a devil in one breath because that person's disciple harmed that person. Later, he was killed.
The three people with the Three Pure Ones are one person's clones
After the protagonist's good friend died, he met the protagonist in the Underworld (the protagonist also died). The protagonist did not recognize him anymore (the protagonist had a woman who liked him before, but the protagonist refused. The woman cut her hair and became a nun. When she finally met the protagonist, she gave him a spider lily. When she reached the Underworld, the protagonist still held it in his hand). The protagonist asked him by the bridge,"Who am I?" Later on, everyone recovered their memories and skills and wanted to kill the protagonist because the protagonist had the Red Spider Lilies and was the person promised by Buddha. The Underworld was also created by Buddha...
Later, the male protagonist found out that the planet he was on was created by Pangu, but Pangu was sacrificed later. He was kept in captivity by another person to absorb his vitality. The people on this planet called him Tiandao.
Then he walked out of this planet
In the Flower Realm, what is the Bauhinia Flower?
Then, he went to the stairs to cultivate…
There were many more, all of which were later found in the collection of entertainment novels.
Seeking the title of the novel

Answer 1

The book Elf: The Hunters Ambush at the Beginning might fit the information you provided. The protagonist, Li Mingzhi, traveled to the world of Pokémon. He obtained his first Pokémon, the little fire dragon, and met a talented girl. In the novel, the main character Li Mingzhi also had two children kidnapped. I hope you like this recommendation. Muah ~