1. Direct quotation: If you want to quote someone else's copy directly, you can politely express your appreciation and recognition of the copy, and indicate their name and source. For example, "I like this copy very much. It tells me what I've been thinking. This was written by talented writer Li Hua. "
2. Restatement: If you don't want to quote someone else's copy directly, you can restate it and express the same point of view. For example, "Li Hua, the author of this copy, wrote a very enlightening article. His main point is ... "
3. Reporting: If you want to rephrase someone else's copy in your own language, you can use reporting. For example, "According to what Li Hua said in the article, we should ..."
Either way, we should respect the work of copywriting and indicate the name and source. At the same time, ensure that your use complies with copyright laws and regulations and avoid infringing on the rights and interests of others.