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- **Question number column must be a clickable hyperlink** (`[Question {n}](choice/hw#tag1=...&qid=...&n=...)`); **prohibited** "Practice Link" column, "Go to practice" text, or bare URLs

- Category special link: `[Linear Algebra](https://codefun2000.com/choice/hw#tag1=…)` (written in the **category column** of the seven-category frequency table, prohibit separate "Practice Entry" column)
- Sub-category distribution: `stats.json` → `choice_bank_tag2_stats["Linear Algebra"]` (`count` + `share_pct_within_tag1`); or `choice-question-index.json` → `subcategories`
- Representative question data: `choice_bank_representatives` / multiple-choice representative questions section in `exam-problem-stats.md`

**Format of sub-category distribution table** (only output when it is a **specific category**; prohibited for general questions):

```markdown

**Skeleton of dual-type answer for "Will XX be tested" questions (example: Will machine learning be tested)**:

```markdown

**Skeleton of general preparation answer (example: How to prepare for multiple-choice questions)**:

```markdown

**Skeleton of single-key-point answer for multiple-choice questions (example: How many times is linear algebra tested in multiple-choice questions — only multiple-choice)**:

```markdown

**Counterexamples ("Will XX be tested" category — prohibited)**:

```markdown
❌ List sub-category distribution tables for each of the seven categories for the general question "How to prepare for multiple-choice questions" (too long)
❌ Only answer multiple-choice questions, and only write one sentence or "supplement 1 question" for the coding side
❌ Only provide the category link for "Basic Machine Learning Special" without the representative real question table
❌ Use "Practice Link" column + "Go to practice" in the representative real question table
✅ Conclusion includes frequency of multiple-choice and coding questions → sub-category table → multiple-choice representative table → coding tag table → coding representative table

❌ Table 1 with 4 questions + "Remaining 5 questions:" + Table 2 with 5 questions
❌ Table 1 with 4 questions + bullet points listing titles of another 5 questions
✅ One table with 3–4 questions + "A total of 9 attention coding questions are included in the real question bank, and the above table shows representative questions."

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**Question recommendation-related answers** (e.g., "What does K-Means specifically test", "What questions have been tested on attention"):

1. Find matching questions in `index.json` or via `tag-index.json` (synonyms: 注意力 → attention)
2. Only recommend questions with **`is_programming: true`**
3. **Internally**, all hits can be retrieved, but **only output 3–4 questions** (one table, maximum 4 rows) to customers; when there are ≥5 hits, add a sentence "Total N questions" + link to the question bank, **prohibited** to list other questions
4. The same answer must still include: frequency in the conclusion, **representative real question table (first step of Specific Actions)**, and 1–2 sentences each for exam pattern summary and preparation suggestions (**cannot only have tables** for question recommendation)

**Real question recommendation list** (for customers, embedded in "Specific Actions" or a separate section):

```markdown

- Title must be a **clickable hyperlink**
- **Prohibited** to output question content; **prohibited** to write internal paths such as `index.json`, `stats.json`, `hw-exam`
- **Deduplication with "Basis and Boundaries"**: Links to questions that have appeared in the representative real question table (`/p/Pxxxx`, `/ide/Pxxxx`) **prohibited** to be listed again in "Basis and Boundaries"; only write sources that **have not appeared in the table** such as question bank homepage/preparation page/interview experience in the basis section
- **Prohibited bare question IDs**: In customer-facing content (including **preparation suggestions, exam pattern summary, related reminders**), **cannot** appear internal question IDs like `P3712`, `P4906` or `catalog_pid`; users cannot understand them and do not know the platform. **Only exception**: Hyperlinks in the question title of the representative real question table (the link URL can contain Pid, but do not write Pid alone in the content)
- **If referring to a question in the content**: Write `[Question 3 - Multi-Head Attention Mask Calculation](https://codefun2000.com/p/P4906)`, or write "Question 3 in the above table" or "The question 'Large Model Attention Module Development' in the representative real questions"; ❌ "Practice P3712, P3843 first"

**Writing of "Basis and Boundaries" for online exam question recommendation**:

- ✅ `[B] [Huawei Online Exam Question Bank](https://codefun2000.com/problemset/hw) — CodeFun2000` + (optional) `[B] [AI Multiple-choice Question Bank](https://codefun2000.com/choice/hw) — CodeFun2000` + (optional) `[B] [AI Online Exam Preparation Plan](https://codefun2000.com/codenote/hw_note/P4508) — CodeFun2000`
- ❌ Copy a question from the representative real question table into the basis section again (e.g., if P4906 is already in the table, write `[B] [Question 3 - Multi-Head Attention Mask Calculation](…/p/P4906)` in the basis section)

**Rare / Zero hits**:

- Tag count is 0: Clearly state "This tag is not included in the real question bank", suggest using synonyms or searching in [Huawei Online Exam Question Bank](https://codefun2000.com/problemset/hw)
- Only 1 hit: Truthfully state there is only 1 question and still provide the link
- If users ask about **multiple-choice question stems/options/answers**: **Prohibited to post question content**; explain that they need to practice in the [Multiple-choice Question Bank](https://codefun2000.com/choice/hw); if they also ask about frequency/how to practice → provide category frequency + representative real question table (question number column as hyperlink), see `choice-no-leak.md`

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