Yes According to the inquiry of the South China Sea. Com, 12345 Complaint is a complaint reporting platform established by the State Administration of Market Supervision, aiming at protecting the legitimate rights and interests of consumers and maintaining market order. 20 19 At the end of August, Ms. Chen, a citizen of Haikou, reported to the comprehensive service hotline of Hainan Provincial People's Government 12345 that the opening hours of the reading space of Hainan Provincial Library were shortened, which brought inconvenience to many readers. On 201September 12, the provincial library immediately made rectification after receiving the dispatch of Hainan 12345 hotline. In order to meet the needs of readers, the library decided to extend the opening hours of reading space to 24: 00 from September 18. So it is useful to call 12345 to complain about the library.