This paper investigates the vestiges of bear worship in ancient Chinese characters. It analyzes the emergence and significance of characters symbolizing bears, such as “能” (néng) and “熊” (xióng), to elucidate their connection with the tradition of bear worship. “能” is identified as a pictogram representing the bear’s body, and it is argued that the character “羽 /能” (yī) used in the bamboo texts of the Chu state is related to bear birth mythology. Additionally, the study reveals that the ancestral surname “嬴” (Yíng) of the Qin dynasty encapsulates meanings related to the bear. The research explores the potential links between the bear worship totem of the Hongshan culture and the ethnic groups of the Qin and Chu states, supporting the polygenetic theory of the formation of the Chinese nation. It particularly emphasizes the significance of the Northeast Asian civilizations beyond the monocentric theory centered around the Yellow River or the dualistic theory of the Yangshao-Liangzhu cultures. The study also contributes to understanding the cultural connections between Gojoseon’s Dangun mythology, the formation of the Korean ethnic group, and further cultural linkages with Japan. This study comprehensively illuminates the impact of bear worship on the formation of Chinese and Northeast Asian cultures and is expected to lay a crucial theoretical foundation for constructing the methodology of “Chinese character archaeology” that integrates studies of ancient characters with ethnology, archaeology, and philology. Through this, it aims to provide deep insights into how various ethnicities and cultures have interacted to shape Chinese civilization.