Basing on "Nian Pu"(annual record)and relevant records,the paper,with the topics of "Long Chang Wu Dao" and "Wei Xue" changes,analyzes whether Wang Yangming s learning process is "three changes","four changes" or "five changes".

The improved measurement of the back-up auto-switch-on application of the external bridge breakers of the two incoming feeders and three transformers substation;

A Talk about the Feactures and Uses of Triangular Circulant Sum with Three Variables;