From the consumer's point of view: As a consumer, Xiao Zhang's point of view is correct. Consumers have achieved fair trade in economic activities, complied with the requirements of market and store order, and have corresponding rights and interests. If the purchased goods are adulterated, fake ones are genuine, shoddy ones, and unqualified products are passed off as qualified products, they have the right to demand compensation from the sellers.

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From the parents' point of view: Xiao Zhang's parents' view is wrong. When one's legitimate rights and interests are infringed upon, one can only suffer the consequences if one submit to humiliation, and it encourages the arrogance of the offenders, which is not conducive to regulating the behavior of participants in economic activities. Parents should enhance their legal awareness and safeguard their legitimate rights and interests according to law.

From the bookstore's point of view: the bookstore's point of view is wrong. As a seller, we should operate in good faith and trade fairly. The products sold shall not be adulterated or shoddy, and unqualified products shall not be passed off as qualified products. If there is such a problem, it is obviously illegal.