Materials Reports (MR) publishes articles which focus on, but are not limited to, the following areas. I. Innovative functional materials, including new energy materials, optical/electro-nic/magnetic materials, biomedical materials, materials for environment protection and remediation, etc. II. Advanced structural materials, including structural ceramics, metal materials, civil engineering materials, surface engineering and material connection, composite materials, polymer materials, etc. It is hereby declared that since January 2019, the English title of the Chinese journal Materials Review (Cailiao Daobao) has been changed to Materials Reports, and its original English title Materials Review is invalid. We appreciate your support and look forward your sustained attention to our journal.