A old woman and a boy A boy goes to shopping.When he finish shopping,A old woman says to him:''Hello,boy.You look like my son.He died last week.Can you say 'mum' to me?It will make me feel better.''The loving boy says:''Mum!''Then the woman goes.The seller tell the boy:''206yuan." ''But I only buy two books!'' ''Yes,but that old woman tell me his son will pay for her."