China, the late 1930s. A village is under siege by Japanese troops. A band of Chinese youth who would not look out of place riding skateboards in contemporary Beijing waits in ambush, guns in hand. As a sinister Japanese troop transport hurtles toward them, the hip Chinese guerrillas use a trip wire and an improvised explosive device to set off a blinding explosion. The bomb fails to kill all of the Japanese soldiers, who are bent on revenge as the episode comes to an end. But there is little suspense: Everyone knows that China will prevail.

This scene from “Enemy Troops at the Village Gate” is one of the many dozens of virulently anti-Japanese wartime dramas airing this season in China. About 100 anti-Japan films and nearly 70 TV programs were produced in 2013, according to Reuters, which estimates that the genre holds as much as 70 percent of the market. Despite waning viewer interest, the new season promises much more of the same.

The government has ordered TV stations to increase the airing of “patriotic” shows, of which anti-Japan dramas are exhibit No. 1. On Aug. 15, the anniversary of Japan’s surrender, a headline in the Global Times, a party newspaper, said, “Prime time TV to be more anti-fascist.”

China has a long tradition of producing war movies for propaganda purposes, mostly good-versus-evil dramas drawn from the all-too-real and brutal war against Japan. The classic of the genre is “Tunnel Warfare,” produced in the 1960s and seen by billions of Chinese, which depicts resourceful Chinese insurgents outsmarting Japanese invaders by digging a network of tunnels.