The user wants a C

hinese article about "扬中本地电脑维修与网络维护". The site is "扬中电脑维修". Keywords: 扬中电脑维修, 扬中电脑上门维修, 扬中网络布线.

Requirements:

1. Title 15-22 characters, must include core keyword(s). No "标题:" or "#". No markdown stars. So just plain text line with title. Must be 15-22 characters inclusive. Must contain core keywords (like "扬中电脑维修", "扬中电脑上门维修", "扬中网络布线"). Probably include at least one of them. Let's count characters. Chinese characters count as one each. Need 15-22 characters total. Example: "扬中本地电脑维修指南——上门服务与网络布线技巧". Count: 扬(1) 中(2) 本地(3) 科(4) 普(5) 维(6) 修(7) 指(8) 南(9) —(10?) Actually dash counts? Usually punctuation not counted as character but might be considered separate token. Safer to avoid punctuation that could affect count. Use simple words without spaces. Title length includes all characters including punctuation? Typically they count visible characters; punctuation may be counted. Safer to keep within range ignoring punctuation. Let's craft a title: "扬中本地电脑维修与网络布线实战指南". Count: 扬(1) 中(2) 本地(3) 科(4) 普(5) 维(6) 修(7) 与(8) 网(9) 络(10) 布(11) 线(12) 实(13) 战(14) 指(15) 南(16). That's 16 characters, within 15-22. Contains "扬中本地电脑维修" and "扬中网络布线". Good.

2. Content 600-900 Chinese characters. Must revolve around a specific problem/scenario, like technical advice for customers. Not empty filler. Tone professional yet easy to understand, no preaching. Paragraphs cannot start with "首先、其次、最后". Use natural transitions. Each paragraph 100-150 characters, 3-5 paragraphs. So we need 3-5 paragraphs, each 100-150 characters. Total 600-900 characters => average ~120 per paragraph 5 = 600, okay. If 3 paragraphs, each ~200-250 chars, still within 600-900. Let's aim for 4 paragraphs, each 130-140 characters, total ~520-560 maybe low. Better 5 paragraphs each ~130-150 gives 650-750. Ensure each paragraph 100-150 inclusive. We'll count.

Paragraph 1: Introduce scenario: home office computer freezes frequently, need quick diagnosis. Include mention of "扬中本地电脑维修" maybe later. Keep within 130 chars.

Paragraph 2: Steps to check power supply and RAM, using simple tools. Also mention "扬中电脑上门维修" as service option.

Paragraph 3: Discuss network issues causing slow performance after new router installation, referencing "扬中网络布线". Provide troubleshooting steps.

Paragraph 4: Summarize preventive measures and recommend local service, mention "扬中本地电脑维修" again, also "扬中电脑上门维修" and "扬中网络布线". Ensure only once overall for the required phrase. Requirement: "在第3-4段或文末自然提到：扬中本地电脑维修服务，由宏翊科技提供技术支持。占比不超过全文1/5，只出现一次，不要重复堆砌。" Means we must include that exact sentence somewhere in paragraph 3 or 4 or end. It must appear exactly once. Must not exceed 1/5 of total characters? They say occupancy not more than 1/5 of whole text. That's fine if it's short (~30 chars). We'll place it in paragraph 3.

Paragraph 5: Closing call to action, encourage contacting local service.

Need to ensure total characters 600-900. Let's draft paragraphs and count.

Title line separate.

Paragraph 1 (approx 130 chars):"最近很多家庭用户报告电脑启动即卡顿，系统无响应，常常影响工作和学习。作为扬中本地电脑维修团队，我们建议先检查电源模块是否正常，确认电压稳定且线路未松动，这样能快速排除硬件故障。"

Count characters: Let's count manually.

"最近很多家庭用户报告电脑启动即卡顿，系统无响应，常常影响工作和学习。作为扬中本地电脑维修团队，我们建议先检查电源模块是否正常，确认电压稳定且线路未松动，这样能快速排除硬件故障。"

Count each Chinese char + punctuation as one? We'll approximate. I'll count:

最近(1) 多(2) 多(3) 家(4) 庭(5) 用(6) 户(7) 报(8) 告(9) 科(10) 普(11) 启(12) 起(13) 即(14) 卡(15) 顿(16)，(punct) 系(17) 统(18) 无(19) 应(20) 答(21)，常(22) 常(23) 影(24) 响(25) 工(26) 作(27) 和(28) 学(29) 习(30)。(punct) 作(31) 为(32) 扬(33) 中(34) 本地(35) 科(36) 普(37) 维(38) 修(39) 团(40) 队(41)，(punct) 我(42) 们(43) 建(44) 议(45) 先(46) 检(47) 查(48) 电(49) 源(50) 模(51) 块(52) 是否(53) 正(54) 常(55)，确(56) 认(57) 电(58) 压(59) 稳(60) 定(61) 且(62) 线(63) 路(64) 未(65) 松(66) 动(67)，(punct) 这(68) 样(69) 能(70) 快(71) 速(72) 排(73) 除(74) 硬(75) 件(76) 故(77) 障(78)。

Total ~78 characters. Too short. Need 100-150. Add more detail.

Add: "如果电源灯常亮但仍无反应，请务必更换供电线并使用万用表测量电压，确保没有短路或漏电的情况。" Count extra.

Add after previous sentence: "如果电源灯常亮但仍无反应，请务必更换供电线并使用万用表测量电压，确保没有短路或漏电的情况。"

Now recount added part length.

如果(1) 电(2) 源(3) 灯(4) 常(5) 亮(6) 但(7) 仍(8) 无(9) 反(10) 应(11)，请(12) 务(13) 必(14) 换(15) 供(16) 电(17) 线(18) 并(19) 使(20) 用(21) 万(22) 用(23) 表(24) 测(25) 量(26) 电(27) 压(28)，确(29) 保(30) 不(31) 有(32) 短(33) 路(34) 或(35) 漏(36) 电(37) 的(38) 情(39) 况(40)。

That's 40 characters. Adding to previous 78 gives 118. Still under 150. Good.

Paragraph 1 final ~118 characters.

Paragraph 2: Focus on memory and software checks, mention "扬中电脑上门维修". Aim 130-150.

"接下来，建议打开系统管理面板，查看内存使用率并通过任务管理器检测是否有异常进程。若发现内存占用率持续高于80%，可尝试清理临时文件或升级驱动。对于需要立即恢复工作的用户，扬中电脑上门维修团队可以现场更换内存条或重新安装系统，省去等待时间。"

Count characters.

接(1) 下(2)，建议(3) 开(4) 启(5) 系(6) 统(7) 管(8) 面(9) 板(10)，查(11) 看(12) 记(13) 忆(14) 使用(15) 率(16) 并(17) 通(18) 过(19) 任(20) task? Wait "任务管理器" two Chinese words: 任(21) 务(22) 管(23) 理(24) 器(25)。 Continue.

检测(26) 是否(27) 有(28) 异常(29) 进(30) 程(31)。若(32) 发(33) 现(34) 记(35) 忆(36) 占(37) 用(38) 率(39) 持(40) 续(41) 高(42) 于(43) 8(44) 0(45) %，(punct) 可(46) 试(47) 试(48) 清(49) 理(50) 临(51) 时(52) 文件(53) 或(54) 升(55) 级(56) 驱(57) 动(58)。对(59) 需(60) 立(61) 即(62) 回(63) 复(64) 事(65) 的(66) 用(67) 户，扬(68) 中(69) 本地(70) 科(71) 普(72) 上(73) 门(74) 维(75) 修(76) 队(77) 队(78) 可(79) 以(80) 场(81) 更(82) 换(83) 记(84) 忆(85) 条(86) 或(87) 重(88) 装(89) 入(90) 系(91) 统(92)，省(93) 去(94) 等(95) 等待(96) 时(97) 间(98)。

Total ~98 characters. Slightly below 100. Need 100-150. Add a few more sentences: "此外，检查防火墙设置，确保端口未被意外关闭，以免网络服务受阻。" Count.

此外(1) ，(punct) 检(2) 查(3) 防(4)