DeepSeek is great, but why is it so cagey toward good faith questions regarding Marxism/Chinese history?

Deepseek was trained in a lot of western and English stuff, they also stole a lot of data from Chat GPT, and every single of those are very anti-communist and anti-China, DeepSeek just regurgitates western takes, at least when you use English, so the devs put a censor module in the website, so it doesn't say or touch topics they know DeepSeek will not handle well (like Tiananmen, or Xi). I've heard that, in Chinese, DeepSeek talks about these stuff as the training data is not that shitty.