The "Chinese Brett" meme on Base Chain is a humorous depiction of a fictional character named Brett, infused with elements of Chinese culture. In this meme, Brett is often portrayed as a stereotypical Western individual who enthusiastically adopts Chinese customs, traditions, and language, often to comical extremes.

The meme typically features images or illustrations of Brett engaging in activities associated with Chinese culture, such as practicing Tai Chi, wearing traditional Chinese clothing like a qipao or a Tang suit, or speaking Mandarin or Cantonese with varying levels of proficiency. These depictions are often accompanied by playful captions or dialogue that exaggerate Brett's embrace of Chinese culture or highlight the contrast between his Western background and his newfound enthusiasm for all things Chinese.

The humor in the "Chinese Brett" meme stems from the juxtaposition of Brett's Western identity with his exaggerated adoption of Chinese customs, creating a humorous contrast that resonates with audiences familiar with both cultures. Additionally, the meme may also playfully poke fun at cultural stereotypes and the phenomenon of cultural appropriation, albeit in a lighthearted and non-malicious manner.