If non-Chinese started moving to China in large numbers this would be a notable change, and the OP’s question makes sense.
“ In 2016, China issued 1,576 permanent residency cards. This was more than double what it had issued the previous year, but still roughly 750 times lower than the United States’ 1.2 million.[1]”
“ The only significant immigration to China has been by the Overseas Chinese, who in the years since 1949 have been offered various enticements to return to their homeland. Several million may have done so since 1949. The largest influx came in 1978–79, when about 160,000 to 250,000 ethnic Chinese refugees fled Vietnam for southern China, as relations between the two countries worsened. Many of these refugees were settled in state farms on Hainan Island in the South China Sea.”