Recently, the course “Scientific Mouth Care - Exploration of Precipitation Dissolution Balance Based on Handheld Technology” co-authored by Ms. Wang Zhaojuan, a Class 2022 master’s degree graduate of Physical Chemistry of the Institute of New Concept Sensors and Molecular Materials, and Ms. Zhao Chenfan, also a chemistry graduate of Shaanxi Normal University, both are now chemistry teachers of the Affiliated Middle School of Northwest A & F University, was selected as in the list of “Ministerial Quality Course” in Basic Education by the Ministry of Education.