1, check with the General Administration of Press and Publication whether there is this publication;
2, if not, fake publication; If so, call the local press and publication department to see if this magazine is published normally. Because sometimes, the data is lagging behind.
3. Ask which database the periodical is queried in. According to the regulations, only HowNet, Wanfang and VIP are valid.
You can ask if you don't understand. If my answer can help you a little, please adopt it. Give someone a rose, and the hand has a lingering fragrance.