The user wants a 1500+字 article, with 6-8 paragraphs, each 150-250 characters? Actually 150-250 words? They said "每段150-250字" meaning characters? Usually Chinese characters count. So each paragraph should be 150-250 characters? They need total 1500+ characters. They require at least 1050 characters. Must be 6-8 paragraphs, each 150-250 characters. So total 6150=900, need >=1500, so need around 150-250 per paragraph, 6-8 paragraphs. Choose 7 paragraphs, each about 215 characters to reach ~1505 characters. Must not include title, just the body. Must not repeat banned words. Must not use AI writing prompts. Must not use certain transition words like 、. Also avoid certain opening phrases etc. Must follow style: natural, conversational, like talking to a friend. Use specific details, examples, no fluff. Must not use banned phrase list. Must avoid "、". Also avoid "开头禁用：、". Also avoid "过渡禁用：、"? Actually they listed "、". Also avoid "结尾禁用：让我们...、。让我想起之前自己踩过的坑，不是随便改参数，而是先定位到底是哪根筋卡住了。" Count characters: Let's count roughly.
I'll write more precisely.
We need to count characters. Let's approximate each paragraph length.
I'll write paragraphs of roughly 200-230 Chinese characters.
"昨天帮朋友排查某电商系统的慢查询，发现数据库CPU飙到90%上限。让我想起之前自己踩过的坑，不是随便改参数，而是先定位到底是哪根筋卡住了。"
Count characters (including punctuation). Let's count manually:
昨天帮朋友排查某电商系统的慢查询，发现数据库CPU飙到90%上限。让我想起之前自己踩过的坑，不是随便改参数，而是先定位到底是哪根筋卡住了。
昨(1)天2帮3朋4友5排6查7某8电9商10系11统12的13慢14查15询，16发17现18数19据20库21C22P23U24飙25到269 270%28上29限30。31让32我33想34起35先36前37自38己39踩40过41的42坑，43不44是45随46便47改48参49数，50而51是52先53定54位55底56是57哪58根59筋60卡61住62了63。 End.
So approx 63 characters? Actually we counted incorrectly; need to count each Chinese character and punctuation as a character. But we need 150-250 characters per paragraph. So my paragraph is too short. Need 150-250 characters.
Thus each paragraph must be 150-250 characters, not words. So need longer paragraphs.
We need to produce 6-8 paragraphs each 150-250 characters. So each paragraph around 180-200 characters.
Let's aim for 7 paragraphs of ~200 characters each => total ~1400 characters, but need at least 1500 characters. So need maybe 8 paragraphs of ~200 each => 1600 characters. But max 8 paragraphs allowed. They said 6-8 paragraphs. So we can use 8 paragraphs to reach 1500+ characters.
8 paragraphs 200 = 1600 characters, okay.
Thus produce 8 paragraphs, each about 200 characters.
Now need to ensure not using banned words. Avoid "", "". Also avoid "让我们", "。让我想起之前自己踩过的坑，不是随便改参数，而是先定位到底是哪根筋卡住了。"
We need 200 characters, currently maybe ~70. So need to expand.
Add more detail: talk about慢查询, 具体查询语句, 业务影响, etc.
Let's write longer paragraph.
Paragraph 1 draft (approx 200 characters):
"昨天帮朋友排查某电商系统的慢查询，发现数据库CPU飙到90%上限，几乎卡住了整个订单服务。我们先打开慢查询日志，看到有几条SQL在半秒以上，尤其是查询订单明细的那条，返回了上千行记录。于是把注意力放在了哪个环节出现瓶颈，而不是直接改参数。"
Now count characters roughly.
昨天帮朋友排查某电商系统的慢查询，发现数据库CPU飙到90%上限，几乎卡住了整个订单服务。我们先打开慢查询日志，看到有几条SQL在半秒以上，尤其是查询订单明细的那条，返回了上千行记录。于是把注意力放在了哪个环节出现瓶颈，而不是直接改参数。
Let's count quickly: I'll count characters (including punctuation). Hard but approximate around 200? Let's count:
昨1天2帮3朋4友5排6查7某8电9商10系11统12的13慢14查15询，16发17现18数19据20库21C22P23U24飙25到269 270%28上29限30，31几32乎33卡34住35了36整37个38订39单40服41务42。43我44们45先46打47开48慢49查50询51日52志，53看54到55有56几57条58S59QL60在61半62秒63以64上，65尤66其67是68查69询70订71单72明73细74的75那76条，77返78回79了80上81千82行83记84录85。86于87是88把89注90意91力92放93在94了95哪96个97环98节99出100现101瓶102颈，103而104不是105直106接107改108参109数110。 End.
That's about 110 characters. Need 150-250. So need more content.
Add more sentences: talk about how they used explain plan, etc.
Continue: "打开执行计划，发现全表扫描导致IO成为主要消耗，于是调大了缓冲池大小，同时把查询条件加上索引，把返回行数控制在合理范围。"
Paragraph 1 final maybe 180-200 characters.
Let's rewrite paragraph 1 as a cohesive paragraph of about 200 characters.
"昨天帮朋友排查某电商系统的慢查询，发现数据库CPU飙到90%上限，几乎卡住了整个订单服务。我们先打开慢查询日志，看到几条SQL在半秒以上，尤其是查询订单明细的那条，返回上千行记录。打开执行计划，发现全表扫描导致IO成为主要
