勤俭,是中华民族的传统美德。布衣蔬食、敝帷不弃也成为纯朴的劳动人民恪守了几千年的生活古训。虽然,当今时代,百姓的日子并非那么穷困。然而,与人有生老病死一样,任何产品也都有它特定的寿命,使用到一定年限时会老化,会报废。这是客观的、无情的事实。 Thrifty, is the traditional virtues of the Chinese nation. Commoner vegetables, spacious curtains do not abandon has become a simple working people to abide by thousands of years of ancient life. Although, in today’s time, people’s lives are not so poor. However, just like a person’s life-and-death illness, any product also has its own specific life span. When used for a certain period of time, it will age and be discarded. This is an objective and heartless fact.