China is approximately 9,596,960 sq km, while French Polynesia is approximately 4,167 sq km, making French Polynesia 0.04% the size of China. Meanwhile, the population of China is ~1.4 billion people (1.4 billion fewer people live in French Polynesia).
This to-scale map shows a size comparison of China compared to French Polynesia. For more details, see an in-depth quality of life comparison of French Polynesia vs. China using our country comparison tool.