South Georgia and South Sandwich Islands is about 2,459 times smaller than China.

China is approximately 9,596,960 sq km, while South Georgia and South Sandwich Islands is approximately 3,903 sq km, making South Georgia and South Sandwich Islands 0.04% the size of China.
Tip: This to-scale comparison of China vs. South Georgia and South Sandwich Islands uses the Mercator projection, which distorts the size of regions near the poles.
Compare further: South Georgia and South Sandwich Islands vs. China