Yuan Long is a Chinese donghua (animated television series) following the story of Wang Shen, a Chinese infantryman who isekais (transported to a different world) in the middle of a sky dive into an Ancient Chinese world that uses qi (life energy) and cultivation. After killing the young master of a powerful family, Wang Shen claims to be the Fiancé of the girl he just met, stirring trouble between the various noble families. The noble families order the couple to be captured or killed, only for Wang Shen to use his military combat prowess and modern weaponry to fight off his enemies.

The story progresses with Wang Shen and his 'fake' bride slowly developing a romantic relationship, while he continues to battle against opponents far above his league. He eventually attracts a powerful ally, who is drawn to his military ready meals. The animation has some impressive details and fluidity, such as the character hairs having their own physics. The audio is normal, but the background is detailed and vibrant, giving the show a traditional Chinese atmosphere.