What are the third-party evaluation mechanisms introduced into calligraphy evaluation?

The introduction of third-party evaluation mechanism into calligraphy evaluation includes the principle of stages. Pupils have to go through the training process from pencil writing to pen writing, and soft pen writing has to go through the double hook and single hook from junior to middle grade, and then to the temporary and comprehensive advanced principles. Primary school students' writing is still in the stage of skill training and formation. The evaluation of students' writing ability depends not only on how students write, but also on how to deal with students' writing methods, writing postures and practice principles. One of the purposes of primary school students' writing exercises is to write well.