Jingyuetan National Forest Park on Changchun's southeastern edge claims to be the largest artificial forest park in Asia — 96 square kilometres of planted forest, lakes, and open land that has been growing since the 1930s and has matured into something that functions ecologically as real forest. The park centres on Jingyuetan Lake, a substantial body of water used for boating, swimming (in summer), and winter recreation when the ice is thick.
In summer the park is a genuine green escape from the city — pine and mixed deciduous forest at a scale that allows real walking rather than garden strolling. In winter it hosts skiing: the park operates ski slopes that attract local residents and is one of the more accessible ski experiences in the city. The Changchun International Automobile Touring and Camping Festival is held here, and the park is a standard venue for city residents' weekend outdoor activities year-round.
The scale means you need more than an afternoon to see it properly. A bicycle or electric scooter is a practical way to cover the main areas.