The prototype story in the octagonal cage is Daliangshan.

Daliangshan, one of the inhabited areas of the Yi people in China, is also one of the poorest areas in China. It is barren and savage, and the poor are the most indispensable. In 217, the media released a video of "Fighting Orphans": Liangshan children who lost their parents were adopted by a fighting club in Chengdu, usually practicing mixed fighting and occasionally participating in commercial performances.

Teenagers are fighting naked in cages, and adults are watching and clapping outside cages. This scene is easy to make people angry. For a time, the incident of "fighting orphans" caused an uproar, and the club was severely criticized and questioned. Some people call the club heartless and use orphans to make money; Some people predict that these orphans are just unqualified fighters, and the best destination when they grow up is security.

film evaluation:

the narrative in the first half of the film is very solid, interlocking, slow and steady, and it is easy to explain in detail how Xiang Tenghui, who started the battlefield, met orphans, how he had to take them in, and how he made money by fighting fake fists.

A series of events, such as how to make the false come true and set up a fighting club. The cause and effect of the whole process are clearly described in a compact plot, concise and neat.

Vivid characterization is a highlight of the film. Xiang Tenghui, Wang Feng, Wang Jingfu, Li Zong and others in the film have their own characteristics, as if they were straight out of reality. On them, there is both a slap in the face, a philistine taste of chasing after gold and profit, and a bit of boldness.