ObjectiveThe primary purpose of this study was to examine Chinese and Mongolian attitudes on cultural and socio‐political issues important to China–Mongolia relations across geospatial and demographic data.MethodTo investigate, this research leveraged Random Domain Intercept Technology (RDIT) to collect anonymous opt‐in survey responses from people in all 34 regions of China (N = 5028) and in all 21 Aimags (provinces) in Mongolia (N = 2003).ResultsFindings revealed significant points of tension between the two countries. Most notably, a majority of Chinese respondents expressed support for a Chinese and Russian invasion of Mongolia, while the majority of Mongolian respondents indicated a strong willingness to fight back.ConclusionThis study provides novel insights from diverse voices in China and Mongolia, two understudied populations, during a critically important time for Asian geopolitics.