In this simple and understandable cartoon,the first part is in 30 years ago,a young mother holding a little girl with a warm smile and the second part is a young lady ,the former girl grown up,holding an avuncular granny now.The purpose of this thoughtful cartoon is explicit to show us that the indispensibility of our family and the cozy company that family bring to each other.There are a flood of causes that we should cherish the love of household.What keeps my perspective is that the leniency of mothers and the love they gave us seem to consist in our genes which can be inherited from our ancestry and relayed to our descendants.It is the nature of human being that parents feed babies and nurture them painstakingly.However,the memories and feelings can not merely defined by cerebral and cold science.In addition,the love from offsprings is to considerately look after their parents correspondingly.Giving and acquiring establish a positive circulation which enables mankind to propagate continuingly.In conclusion,on the one hand,we should be kind ,because parents are to children as the spacious sea is to fish,on the other hand,we should be obedient ,because children are to parents as nest is to flying birds.Never let the chain of love discontinue.