The house that has been preserved cannot be bought or sold. It can only be bought or sold after the preservation has been lifted. If the house is purchased or sold, the court will detain or fine the minor; If the circumstances are serious, a crime shall be constituted. According to Article 111 of the Civil Procedure Law, if a litigant participant or other person conceals, transfers, sells or destroys the property that has been sealed up or detained, or has been counted and ordered to keep the property, or transfers the frozen property, the people's court may impose a fine or detention according to the seriousness of the case; If a crime is constituted, criminal responsibility shall be investigated according to law. According to Article 314 of the Criminal Law, whoever conceals, transfers, sells or intentionally damages the property that has been sealed up, detained or frozen by the judicial organ, if the circumstances are serious, shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or a fine.
 Legal basis:
 Article 111 of the Civil Procedure Law of the People's Republic of China
 If a litigant participant or other person commits one of the following acts, the people's court may, according to the seriousness of the case, impose a fine or detain him; If a crime is constituted, criminal responsibility shall be investigated according to law:
 （1） Forging or destroying important evidence to impede the trial of a case by a people's court;
 （2） Preventing witnesses from giving testimony by means of violence, threat or bribery, or instigating, bribing or coercing others to commit perjury;
 （3） Hiding, transferring, selling or destroying the property that has been sealed up or distrained, or the property that has been counted and ordered to be kept, or transferring the frozen property;
 （4） Insult, slander, frame up, beat or retaliate against judicial personnel, litigation participants, witnesses, interpreters, expert witnesses, inspectors or persons assisting in execution;
 （5） Obstructing judicial personnel from performing their duties by violence, threat or other means;
 （6） Refusing to perform a legally effective judgment or order of a people's court.
 The people's court may fine or detain the main person in charge or the person directly responsible of a unit that commits one of the acts specified in the preceding paragraph; If a crime is constituted, criminal responsibility shall be investigated according to law.