1.2 the author is responsible for the contributions: according to the provisions of the copyright law, journals can modify and abridge the contributions in words. If the manuscript requested by the author is not sent back for more than 1 month, it shall be deemed that the manuscript was automatically withdrawn by the author.
1.3 This journal has joined the digital journal group in Wan Fang data, and has been included in the core journal (selected journal) database of China, the full-text database of China academic journals (CD-ROM version) and the full-text database of China Journal Network. All contributors to this journal are considered as their manuscripts can be included, reprinted, published online or provided with information services through the Internet. When the manuscript is hired, it is necessary to sign the paper copyright transfer book, and transfer the rights of copying, publishing, information network dissemination, translation and assembly of the paper to this journal for global use. After the publication of the article, the author will be paid the copyright royalties (including the remuneration for various ways of using the printed version, CD-ROM version and online version) and the remuneration in one lump sum, and no other remuneration will be paid. If you don't agree to include the article in the above database, please indicate it in the submission, otherwise it will be regarded as agreement.