I. Description of uploading works: Only teachers who have obtained excellent courses at the municipal level need to log in through the Gansu Smart Education Cloud Platform and upload them on the National Basic Education Excellent Course Platform. County-level and municipal-level audits can be conducted offline, or by means designated by cities and counties themselves. 2. Description of the production of works: Excellent courses are presented in the form of micro-courses, including micro-course videos, teaching design, study task list, courseware, homework exercises and necessary experimental demonstrations. Excellent curriculum models can be found in the national network cloud platform for primary and secondary schools.