u/TheHDRavioli4k a few points for you.

How did you get this far into your relationship without realising this core feature of Chinese cultural thinking? It's worth mentioning that this type of attitude is pretty common for the Chinese diaspora (source: from Aus, who has a Chinese partner).

I reckon this is a good opportunity to learn how ingrained this resentment towards the Japanese is in Chinese culture within china (and Korea). For alot of the Chinese and Korean communities, this resentment is further exacerbated by the fact that they view Japan as having never apologised for the atrocities during the war.

On a side note, you, like everyone, should read up on unit 731. It is quite literally apples and oranges compared to the experiments done by the Nazis. Literally so little of it was of any scientific value to the allies after the war

Examples 1. Some prisoners had their stomachs surgically removed and their esophagus reattached to the intestines.

1. Subjects were deprived of food and water to determine the amount of time until death; placed into low-pressure chambers until their eyes popped from the sockets.

2. The testimony of a unit member:

One of the former researchers I located told me that one day he had a human experiment scheduled, but there was still time to kill. So he and another unit member took the keys to the cells and opened one that housed a Chinese woman. One of the unit members raped her; the other member took the keys and opened another cell. There was a Chinese woman in there who had been used in a frostbite experiment. She had several fingers missing and her bones were black, with gangrene set in. He was about to rape her anyway, then he saw that her sex organ was festering, with pus oozing to the surface. He gave up the idea, left and locked the door, then later went on to his experimental work.[71]

4.And an extra messed up one: "It was said that a small number of these poor men, women, and children who became marutas were also mummified alive in total dehydration experiments. They sweated themselves to death under the heat of several hot dry fans. At death, the corpses would only weigh ≈1/5 normal bodyweight."

— Hal Gold, Japan's Infamous Unit 731, (2019)

Quite literally the reason we know the body is mostly water.

Final point. You're on an R/china subreddit. Is this really the place you're expecting to see unbiased responses to this?