ICCOE 2021 Shining Points: 1.Accepted papers will be published into IOP Conference Series: Earth and Environmental Science (EES) (ISSN: 1755-1315), which is indexed by EI Compendex, Scopus, Thomson Reuters (WoS), Inspec,et al.2.Two outstanding professors have joined as Speakers. One is Professor CHOU Loke Ming from Tropical Marine Science Institute, National University of Singapore, Singapore. And another Associate Professor is Edmond Yat-Man LO from Nanyang Technological University, Singapore. == Submission Methods: http://confsys.iconf.org/submission/iccoe2021