Xi Jinping has been on a quest to strengthen the ethnic identity of China, specifically the Han Chinese ethnic group, and this is probably part of it. If you look at the immigration policies of China, you'll find that they are some of the most restrictive in the world[1]. It is almost impossible for a Non-Chinese person to become a Chinese citizen. From what I've heard from people who know people in the Xi Jinping administration, they are embracing ethno-nationalism with incredible zeal. There's also a lot of ethnonationalist propaganda in China right now and western commentators have taken notice[2]. From what I've heard through sources, they're preparing for a future where it's eventually a zero sum game between China and the rest of the world, especially with regards to dwindling energy and other natural resources. For example China built six times as many coal plants as the rest of the world combined last year [3]. There is a huge denial of this in the west as westerners believe that racism and communism are incompatible, and at least China says it's communist.

[1]https://www.crownrelo.com/intl/en/article/four-toughest-plac...

[2]https://thediplomat.com/2023/06/riding-the-tiger-ethno-natio...

[3]https://www.houstonpublicmedia.org/npr/2023/03/02/1160441919...