1. The reason is that the journals published in the articles have not been included in HowNet, so the papers will not appear on HowNet.

2. The paper does not meet the inclusion qualification of HowNet, so it will not appear on HowNet.

3. The last possibility, which is also the biggest possibility, is that due to the special inspection of the Propaganda Department of the Communist Party of China, the periodical has not yet completed the verification, so the online time will be slower.

It will take about 2-3 years to pass the inquiry.