Zhang Guoqing has always been a man of action. Since he promised his two young sons to tidy up the backyard bungalow, he did not enlist outside help.
The next day after work, he braved the biting cold wind and used his less-than-perfect carpentry skills to piece together a large rectangular table and a makeshift shelf against the wall.
It was the dead of winter, and he couldn't let his precious sons freeze. To keep them warm, he found an old coal stove from the warehouse.
He was busy installing the chimney, lining the stove, and re-planning the chimney route. To enhance heating efficiency, he lengthened the chimney inside the house in some areas.
