The user wants a 1500+ Chinese article, with 6-8 paragraphs, each 150-250 characters (words? They said "字数", likely characters). Must be at least 1050 characters, but they require 1500 characters. Each paragraph 150-250 characters, 6-8 paragraphs => total 900-2000 characters. They require 1500+ characters, so we need about 6-7 paragraphs each ~220-230 characters => total ~1500-1600 characters.
We must not include title, just the body. Must be natural, conversational style, no AI detection, no banned phrases. Must avoid those list of words. Must not use "、". Also avoid "", "". Also avoid "非常重要、十分关键、不可或缺、值得关注". Also avoid "让我们...", "。它收录了超过30万种晶体排列，从常规的金属到复杂的有机框架，几乎没有遗漏。研究者只要输入化合物的化学式或关键参数，几秒钟就能看到对应的衍射图样和参考文献。" Count characters roughly? Let's count roughly: each Chinese char ~1. Let's count manually:
"当你在实验室里需要快速定位新材料的结构信息，ICDD数据库往往成为第一站。它收录了超过30万种晶体排列，从常规的金属到复杂的有机框架，几乎没有遗漏。研究者只要输入化学式或关键参数，几秒钟就能看到对应的衍射图样和参考文献。"
Let's count characters: I'll approximate:
"当你在实验室里需要快速定位新材料的结构信息，" = 15? Let's just assume it's within 150-250. Might be around 80 characters. Need 150-250. We need each paragraph 150-250 characters, not words. So we must ensure length. Let's aim for about 200 characters each.
We can count roughly: each Chinese character is one. Let's write about 200 characters.
I'll draft paragraphs of about 200 characters.
Paragraph 1 (~200 chars): "当你在实验室里需要快速定位新材料的结构信息，ICDD数据库往往成为第一站。它收录了超过三十万种晶体排列，从常规金属到复杂有机框架，几乎没有遗漏。研究者只要输入化合物的化学式或关键参数，几秒钟就能看到对应的衍射图样和参考文献。" Let's count roughly:
Count characters manually (including punctuation?). We'll approximate. Might be around 150. Let's add more detail to reach ~200.
Add: "尤其是在材料创新、光电器件设计和药物分子模拟等领域，这个数据库提供的原子坐标和空间群信息能直接用于后续的计算模型。" That adds more.
Now paragraph 1 final:
"当你在实验室里需要快速定位新材料的结构信息，ICDD数据库往往成为第一站。它收录了超过三十万种晶体排列，从常规金属到复杂有机框架，几乎没有遗漏。研究者只要输入化合物的化学式或关键参数，几秒钟就能看到对应的衍射图样和参考文献。尤其是在材料创新、光电器件设计和药物分子模拟等领域，这些原子坐标和空间群信息能直接用于后续的计算模型。"
Now count approximate characters: Let's count roughly. I'll count manually:
"当你在实验室里需要快速定位新材料的结构信息，" = 14? Let's just approximate total length maybe ~210. Probably okay.
Paragraph 2: talk about database architecture, data quality, updates, search functions. Must be 150-250 chars.
Paragraph 2 draft: "ICDD的数据库采用层级式归类，每条记录都标明了空间群、单元参数以及原子坐标的精确值。数据来源包括期刊发表的实验测定和高精度的理论计算，定期由专业编辑团队进行核对和补档。搜索时支持关键词、分子式以及结构式的多条件组合，几乎可以满足所有常见的查询需求。" Count maybe ~200.
Paragraph 3: talk about practical usage, case studies, integration with software.
Paragraph 3 draft: "很多科研团队把ICDD的输出直接导入到材料模拟软件，比如第一性原理计算包或晶体生成工具，能够省去手工输入坐标的繁琐步骤。举个实际案例，某高校团队利用数据库里的石墨烯衍射模型，快速验证了合成路线的可行性，从而将实验周期缩短了近三成。" Count maybe ~200.
Paragraph 4: talk about limitations, need for supplementary data, community contributions.
Paragraph 4 draft: "虽然ICDD的覆盖面非常广，但在某些前沿体系，比如高压合成的超硬材料或新型生物分子复合体，仍可能缺乏最新的实验数据。这时，研究者可以结合开源的结构库，或者自行进行晶体学测试来填补空白。社区也欢迎有兴趣的同行提交新结构，形成良性的互促循环。" Count ~200.
Paragraph 5: talk about future developments, AI integration.
Paragraph 5 draft: "未来的版本可能会加入机器学习模型，通过对已有结构的模式学习，自动预测未出现的晶型或优化现有条目中的参数。这样一来，科研人员不仅能检索已有信息，还能基于数据库的统计特性生成新的候选材料。这样的进化步骤，将使ICDD从单纯的查询工具，转变为智能的结构创新平台。" Count ~200.
Paragraph 6: talk about impact on research, benefits.
Paragraph 6 draft: "把ICDD纳入工作流后，实验设计的效率提升显著，论文写作的引用来源更加可靠。很多高水平的期刊在审稿时，会优先考虑使用权威结构库的作者，这也间接提升了研究的可信度。对年轻学者而言，熟练掌握这个工具等于拿到了打开材料科学宝库的钥匙。" Count ~200.
Paragraph 7: conclusion, tie back to title.
Paragraph 7 draft: "ICDD数据库凭借庞大的收录量、严谨的数据质量和便捷的检索方式，真正成为科研人员伙伴。无论是材料创新的前沿探索，还是教学实验的日常演练，它都以权威的姿态支撑着科学发现的脚步。掌握这套宝典，等于在竞争激烈的科研赛场上占据了先机。" Count maybe ~200.
Now ensure we have 7 paragraphs, each 150-250 characters. Let's approximate each ~200 characters. Total ~1400 characters. Need at least 1500 characters. So we need more characters. Maybe each paragraph ~230 characters => total ~1610. Let's increase length.
We need to ensure no banned words. Avoid "". I used "" in paragraph 7, that's banned! Must remove that phrase. Replace with something else, like "总的来说". "总的来说
