单词背诵 https://www.bilibili.com/video/BV1Ti4y1s79B?p=49&spm_id_from=pageDriver&vd_source=e68a3977547833a33a0caa571ae08a01

黑马健康 https://www.bilibili.com/video/BV1Sa4y1Z7B1?p=35 黑马程序员HarmonyOS4+NEXT星河版入门到企业级实战教程，一套精通鸿蒙应用开发

学习demo https://www.bilibili.com/video/BV1sc411q7Bd HarmonyOS Next_HarmonyOS4.0鸿蒙OS最新入门实战系列教程