angularjs: https://docs.angularjs.org/guide/directive
schema-form: https://www.npmjs.com/package/angular-schema-form
smart-table: https://lorenzofox3.github.io/smart-table-website/#section-basics
bootstrap css: https://getbootstrap.com/docs/3.3/css/
ustc mirros: https://mirrors.ustc.edu.cn/help/pypi.html