It is the summer vacation now, and we are actively contributing to the infrastructure development of this city, adding bricks and mortar to its growth. Of course, that's just figurative language; in plain terms, it means doing manual labor.,Wang Mingzheng was muttering to himself when a fifteen or sixteen-year-old walked towards him. He carried a backpack and had a pair of endearing dimples on his face, radiating youthful energy yet carrying an air of detachment.,Having said that, he tossed the walnut shells in his hand aside, quickly put on his clothes, and went out.。