It is not easy to contribute. Photoelectric Express of Tianjin University of Technology is an international English academic journal sponsored by Tianjin University of Technology, which focuses on the research in the field of optoelectronics and requires high quality and innovation of papers. Periodicals are monthly, with a long publishing cycle and fierce competition. In addition, journals have strict requirements on the format, content and repetition rate of submitted papers, which require the author to make full preparation and revision, so it is not easy to submit papers.