Define quality of life?
Quality of life refers to sense of security and level of satisfication we experience in our daily lives. This involves both non-material life and material life.It refers to many aspects, such as political,environment,economic,etc.Also as subjective feelings so there's no universal explanation of quality of life.(Little reference)Material life: Satisfaction obtained by spending money, such as you feel happy because of a concert ticketNon-material life:Satisfaction obtained not by spending money,such as you feel happy because you have a good relationship with your family.Subjective feelings: personal feelings or views which affected by our values,cultural background,personal goals and standard.Objective feelings: can be quantified and for statistical analysis.