How about Zhang in Chunxing, Tangshan?

Tangshan Chunxing Zhang is a good man. Speaking of Zhang, Wu Lin, director of the Department of Warfare and Chess System of National Defense University, gave an image metaphor: he is a hard-working old ox-style comrade. Zhang is a core member of the teaching and research section of Bingqi deduction. Every year, I go to the National Defense College to guarantee foreign military students' exercises. After he changed jobs, the leaders of the National Defense College hoped that he would guarantee the annual exercises. Zhang didn't say anything about it, so he agreed without hesitation. When the task of tackling key problems was extremely tense, he went to the National Defense College, 20 kilometers away from the National Defense University, to support the exercise during the day, and then came back at night to make up for the day's work. There was no problem in both sides' work. In this way, Zhang silently undertook the work of two or more people, which lasted for 67 years.