What are the characteristics of China's modern sculpture Hard Times?

China's modern sculpture "Hard Years" shows the hardships of the Red Army soldiers' lives. There is no description of the Red Army's charge, nor how the Red Army soldiers suffered. But through the simple artistic image of an old Red Army and a young Red Army playing flutes while resting on the March, it expresses the lofty theme that Red Army soldiers always yearn for a better future despite hard work and fatigue.