It depends on the specific situation. If it is pre-litigation preservation, the trust funds can be sealed up if the following conditions are met: 1. Urgency: it must be an emergency, and failure to take property preservation will cause irreparable damage to the applicant's legitimate property rights and interests; 2. passivity: the interested party must apply to the people's court where the property is located, and the court takes the initiative to take property preservation measures and has no right to dispose of it; 3. Guarantee: In order to protect the rights of civil subjects equally, the applicant must provide guarantee. Otherwise, the court will reject the application. Article 101 of the Civil Procedure Law of People's Republic of China (PRC), if an interested party fails to apply for preservation immediately due to an emergency, which will cause irreparable damage to his legitimate rights and interests, he may apply to the place where the preserved property is located, the domicile of the respondent or the people's court with jurisdiction for preservation measures before bringing a lawsuit or applying for arbitration. The applicant shall provide a guarantee. If no guarantee is provided, the application will be rejected. After accepting the application, the people's court must make a ruling within 48 hours; Those ordered to take protective measures shall be executed immediately. If the applicant fails to bring a lawsuit or apply for arbitration according to law within 30 days after the people's court takes the preservation measures, the people's court shall lift the preservation.