On the premise of normalization of epidemic prevention and control, Harbin Library has fully resumed normal reception since April 20021,1. This means that readers can enter the library at any time and control it according to the average daily reception in previous years. The library takes a series of prevention and control measures, including taking temperature, wearing masks and keeping social distance. To ensure the safety and health of readers. This move is to facilitate readers' access to library resources and promote the spread of knowledge and learning.