Good News about publication: IC4E 2017 and IC4E 2018 conference proceedings have been included into ACM digital library and have been indexed by EI Compendex and Scopus. IC4E 2019 conference proceeding has been included into ACM digital library. All accepted excellent papers by IC4E 2020 will be published in the International Conference Proceedings Series by ACM, which will be archived in the ACM Digital Library, and sent to be indexed by EI Compendex and Scopus and submitted to be reviewed by Thomson Reuters Conference Proceedings Citation Index (ISI Web of Science). Submission Methods: 1. Please submit your paper through the Electronic Submission system (http://confsys.iconf.org/submission/ic4e2020); 2. You also can send your paper to the conference e-mail box: ic4e@iderc.org;