As a consequence of being indexed on Scopus and ESCI, the manuscripts we received increased during the 2010-2019 period. Details were given in Fig. 1. This increase is a formidable challenge. On the one hand, we are under pressure from authors who demand short review times and short waiting times for publication. On the other hand, we must strictly maintain the quality of the articles we publish (Fig. 2).

Figure 1. Number of Manuscript Received vs Accepted (2010-2019)

Figure 2. Rate of Article Acceptance (%) (2010-2019)

The following are the steps we have taken to guarantee and improve the quality of the published article:

1. Since 2017 we have used the Open Journal System (OJS) on all article management functions and facilities to manage articles more conveniently. The editors can supervise each other through the system. Also, editors can quickly monitor the performance of reviewers and authors.
2. We implement a more stringent filter at an early stage to reject inappropriate manuscripts to proceed to the review process. We have determined a minimum standard for articles to continue the review process.
3. We conduct strict plagiarism checks on manuscripts that we deem appropriate to proceed to the review process using professional software.
4. We hold editor training and discussion forums to improve editors' ability to handle manuscripts and synchronize mindsets in decision-making.
5. We invite editors with proven expertise from various countries and they are willing to help us voluntarily
6. We invite scientists from various countries as reviewers. Therefore, we really thank you for their commitment to voluntarily reviewing the articles.
7. We evaluate the review results from reviewers. As a result, our review time is relatively long; the average for the 2015-2019 period is 4-5 months (Fig. 3).
8. We do the copyediting stage carefully for articles that have been accepted. This step is needed to prevent substantial errors that are missed in the review process. Copyediting is also very useful to improve the readability of articles, the feasibility of illustrations, the suitability of citations and references, etc. This process takes an average of 3-4 weeks.
9. We improve the quality of the layout of articles with stringent standards so that the appearance of each article in each volume becomes uniform. We always try to shorten the time for article layout while maintaining quality.
10. We carry out the proofreading stage by the author and editor as a final check uploading the article in an online system —the time required at this stage is, on average, 2-3 weeks.
11. Finally, we post it in the "articles in press" section. Author and editor still have a chance to make revisions if they find unnecessary errors.
12. We are taking into account the waiting time between articles accepted to publish, which is sharply increased in the 2015-2019 period (from 4.3 to 8.8 months), see Fig 2. Through careful calculation, we manage the number of articles for each year's publication. Therefore, we increased the number of articles gradually from 43, 51, 68, 100, and 120. In 2020, we plan to publish 150 articles, which is distributed into 6 issues. The distribution of countries of origin of the authors for the 2015-2019 period is shown in Fig. 5

Figure 3. Average review time in the period of 2015-2019 (in weeks)

Figure 4. Average of waiting time from accepted to published (in months)