Is it true that UnionPay informed that it received a short message from the court about property preservation?

Fake. This is because property preservation is a civil compulsory measure, which can only be completed by the people's court, so the news sent by other institutions can be believed that it has no substantive effect and the court will notify it in person. Property preservation is a temporary measure taken by the people's court to ensure the actual execution of civil judgments or avoid property losses and protect the interests of creditors.