1. First, we open the browser of the computer, search China HowNet and log on to the homepage of China HowNet.

2. After clicking on the journal navigation, a new page will pop up, in which we can enter the name of the journal we want to search.

3. Taking time series as an example, you can search magazine information and indicate the network delivery.

4. Finally, we can see if it is a core journal, as shown in the figure below.