Qing (China) to Square Centimeters: the quick answer
1 qing = 666,667,000 cm²
1 qing (China) equals 666,667,000 square centimeters
To convert qing (China) to square centimeters, multiply the value by 666,667,000. To go the other way, multiply square centimeters by 1.5 × 10⁻⁹ to get qing (China).