Jingming Garden is an imperial garden on the Jade Spring Hill west of a palace that covers how many kilometers ?
Jingming Garden: Jingming Garden () is an imperial garden on the Jade Spring Hill in Beijing, China, west of the Summer Palace. Summer Palace:  Mainly dominated by Longevity Hill () and Kunming Lake, it covers an expanse of 2.9 km2 , three-quarters of which is water.
2.9 km2