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How did Evil Unbound (731), one of the most anticipated Chinese war movies of 2025, go from patriotic hype to online backlash? A deep dive into the official narrative, the audience reception, and everything that’s particular about this movie.
 

731 and 918, those were the numbers dominating Chinese social media over the past week. Both numbers carry heavy historical weight, but the recent discussions surrounding them reveal two parallel worlds of the official narrative vs the audience experience of a controversial new World War II film.

It was “9.18” on Thursday, when China commemorated the 94th anniversary of the September 18th Incident (九一八事变). On that day in 1931, a small explosion on a Japanese-owned railway near Shenyang (Mukden) was used as a pretext to invade Manchuria.

While many older Chinese were taught in school that the war began in 1937, recent state-led campaigns increasingly emphasize 1931 as the true beginning of China’s “14-year-long war” (1931–1945). Over the past decade, the 918 commemorations have become more prominent online, shaping public memory through nationalistic messaging.

This year, the commemoration had an extra dimension, as it wove the release of Evil Unbound (English title), also known as 731, into the patriotic media narratives around 918.

Patriotic film poster putting 918 and 731 together.

The much-anticipated war movie 731depicts the atrocities of Japan’s Unit 731 (731部队), notorious for conducting horrific biological warfare experiments in Harbin during World War II under Major General Shiro Ishii (石井四郎), a former army surgeon and biologist with a particular interest in historical plagues. Under his command, Japan’s biological warfare and human experimentation in China were carried out on a larger scale than anywhere…

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“Comrade, are you from the new China?”

A man in a blood-stained 1940s PLA uniform sits in the grass beside a modern Chinese soldier in full combat gear, staring at him with quiet intensity. When told he is indeed from the “new China,” the old soldier leans closer and asks: “So… did we win?”

“We did,” the…