Therefore, before submitting any competition papers, it is best to read the competition rules and guidelines carefully and check the copies as required. Generally speaking, many competitions and academic institutions require that the duplicate checking rate of papers should not exceed 10%, but in some cases, the duplicate checking rate may be more stringent, such as below 5%, so please be sure to understand the duplicate checking requirements of the selected competition before submitting. The following are some precautions: originality of the paper: make sure that the submitted paper is original and quote other materials you refer to in the paper. Literature source: materials cited by other authors are required to have complete sources, and all citations and references must meet the requirements of the selected competition or journal. Reasonable topic selection: choose a topic or research field to ensure that it is innovative and practical, and the topic relevance meets the requirements of competitions or journals. Duplicate checking tools: use reliable duplicate checking tools, such as Turnitin or iThenticate, to ensure that the duplicate checking rate of papers is within the specified range. Check in advance: Before submitting, check and correct any possible grammar mistakes or other problems by yourself. Writing format: you need to write a paper according to the format requirements of the selected competition or periodical, such as the title, font, font size, line spacing, etc., which need to be paid attention to. In short, in order to ensure that the papers can pass the examination of competitions or periodicals, it is necessary to carefully prepare and check, and use reliable duplicate checking tools as required.