Shandong preschool education network will not include published articles. If it is an article published within Shandong Preschool Education Network, you can enter the title search in the station, and the published article should be queried in HowNet or Wan Fang.

Preschool Education Network is a national academic computer Internet, which is built, managed and operated by national investment, the management of Ministry of Education, Tsinghua University and other institutions of higher learning. Mainly for educational and scientific research institutions, it is the largest public welfare Internet in China. 1996 was recognized by the State Council as one of the four national backbone networks.