One paper on Chinese racism concludes (opens pdf):

Racism is not just a Western problem, it is a problem in China too. In many ways, China can be viewed as racist. From ancient times, racism has been part of the construction of the Chinese Han population. Perceptions about their standing in the international realm has provided their course of development and fuelled their ideologies that embed racial context ... The development of the Han race was centred on the Chinese perception that they are the most advanced and superior race in the world and any other culture that came to China had to be either eliminated or adapted into Chinese culture in order to stimulate civilisation. The Chinese Government choose to dominate regions of ethnic minorities so they can maintain control and enforce racial opinion that allows a consistent consensus of the superiority of the Han population. The Tibetan and Uighur regions have become subject to this kind of manipulation and institutionalised racism has become a specific tool of domination.

China can be viewed an extremist country, its racial tactics have been compared to those of Nazi Germany as it singles out other races in the quest for its own absolute power. China can be likened to North Korea in the sense that it takes violent and discriminatory measures to eliminate ethnic minorities that would ‘contaminate’ their pure race.

Here is a series of article on Chinese racism in more recent contexts.

A rights group reported, From Covid to Blackface on TV, China’s Racism Problem Runs Deep, and urged China [To] Combat Anti-Black Racism on Social Media.

You'll find much more on the web.