Why didn't Changchun dare to develop Yanming Lake?

On February 2, 2002 1,1,Changchun Municipal Planning and Self-discipline Bureau issued the Revision Announcement of Regulatory Detailed Planning of Yanming Unit in Green Park, which adjusted the residential land of * * *126,000 square meters south of West Fourth Ring Road and east of Keelung Street to commercial land, and the land for primary and secondary schools within the scope of * * 90,000 square meters for sports. Adjust the original residential land and commercial land into residential land, primary and secondary school land, cultural and sports land, social welfare land and parking lot land, totaling * * * 40. 1 10,000 square meters.