What does it mean to receive Zheng's positive short message from June 5438 to February 2022?

Fraudulent SMS. Announcements have been issued in many places in Zhejiang to remind people to use the new fraud method of "mixed-up" SMS. From June, 5438 to February, 2022, the positive short message information received by Zheng in this city was fraudulent short message. Zhengzhou, referred to as "Zheng" for short, was called "heaven and earth" in history and called Shangdu in ancient times. Now called Greentown, it is a prefecture-level city, provincial capital and megacity under the jurisdiction of Henan Province.