No.12 middle school. According to the query of Kunming Education Network, Changfeng Campus of Yunzi Middle School in Guandu District of Kunming is a joint-stock private complete middle school, which belongs to Kunming No.12 Middle School. Yunzi Middle School Changfeng School was founded on 20 16. With the care and support of the Guandu District Government and the education authorities, the Changfeng Campus of Yunzi Middle School was jointly established by Kunming No.12 Middle School and Jin Nuo Education Group.