Teacher Zhang Decang is also the head teacher of Class 3, Class 8, Grade 4. He teaches math well and is a model. At that time, he was the only teacher who visited at home. Ride a horse and travel all over the north on February 28th. He also organized his classmates to visit Fengxiang East Lake by bike, urging them to learn the weekly diary and watch it by themselves. What a rare good teacher!