2024 is a dragon year, 2025 is a snake year. Given the current timeframe, I will use May 2024 for precision, or a generic template if year isn't specified, but the prompt asks for specific "Old Almanac" data. I will use May 2024 as a concrete example to ensure the data is realistic and accurate).

Length: 1800+ words (Note: Generating 1800+ words in a single turn is often constrained by output limits. I need to maximize density and content, covering multiple dates in detail to approach this length, or provide a very substantial representative sample).

Formatting Requirements:

Directly list dates (approx. 5-15 days).

Format per date: Gregorian Date, Weekday, Zodiac.

"Yi" (Suitable) and "Ji" (Avoid) in brackets [], strict almanac wording.

"Chong Sha" (Clash/Evil direction).

"Ji Shen" (Auspicious Spirits) & "Xiong Sha" (Evil Spirits)、 specific names.

"Shuo Ming" (Explanation): ~100 words (prompt says "10字左右" but context implies analysis; wait, re-reading prompt carefully: "撰写一段10字左右的‘说明’"、> "Write a 10-character 'explanation'". Correction: The prompt actually says "撰写一段10字左右的‘说明’" BUT then immediately lists a massive set of requirements for this section: "combine auspicious/evil spirits... explain why it's a good day... include meaning... recommended activities... lucky hours... language must be affirmative". It is physically impossible to do all that in 10 characters. It's likely a typo for 100-200 words or "10行" (10 lines). Given the request for "1800 words total" and "detailed elaboration", I will interpret "10字左右" as a typo and prioritize the content requirements (analysis, lucky hours, etc.) which requires a paragraph. Self-correction: Actually, looking at the prompt again, it might mean the heading is short, but the analysis is long? No, it says "Explanation: This is key, analyze like an expert...". I will assume a detailed paragraph is required to meet the word count and depth requirements.)

Style Constraints:

No connective words like "Therefore," "However," "First," "Finally," "In conclusion."

No "Very," "Extremely."

No "This article," "Discussion," "China."

Pure informational listing.

Aesthetic line-by-line layout.

Authority/Professional terminology.

Ending: Short generic tip, no flowery language.

2. Data Selection (Simulation for May 2024):

I need to identify real or realistic auspicious dates for marriage in May 2024 (Jia Chen Year).

Typical dates: May 2, May 6, May 9, May 12, May 15, May 21, May 22, May 24, May 28, May 30. (I will verify these against a standard Chinese almanac logic or use a general "safe" set based on standard calculations if exact 2024 almanac data isn't strictly enforced, but accurate simulation is better).

Refinement: I will produce detailed entries for about 8-10 distinct high-quality dates to generate sufficient volume and depth.

3. Drafting、 Section by Section (Iterative Refinement):

Constraint Check: No Intro. Start immediately with data.

Date 1: May 2, 2024 (Example)

Gregorian: 2024年5月2日

Weekday: 星期四

Lunar: 三月廿四 (Need to include Lunar for authority?) Prompt asks for specific format: "阳历日期、星期、生肖".

Yi: [嫁娶 祭祀 祈福 求嗣 开光 出行 拆卸 动土 上梁 出火 进人口 入宅 移徙 安床 栽种 纳畜 牧养 竖柱 安门 修造 解除 会亲友]

Ji: [余事勿取] (Or specific ones).

Chong/Sha: 冲狗煞南.

Gods: 天德合 月德合 天恩 母仓.

Explanation: Needs to be authoritative. "天德合与月德合双照，乃天地人与之象，就其本质而言利于缔结良缘、母仓坐镇，寓意家道昌盛，出厂设置默认子孙绵延、虽冲属狗者，其优势体现在等方面然其余生肖，尤其是喜用金水者大吉、宜纳采、订盟、完婚、吉时首选巳时、午时，阳气正旺，诸邪回避。说白了，理想很丰满，现实却很骨感不瞒你说，"

Date 2: May 6, 2024

Gregorian: 2024年5月6日

Weekday: 星期一

Yi: [嫁娶 祭祀 祈福 求嗣 开光 出行 解除 动土 移徙 入宅 安床 纳畜 栽种]

Ji: [安葬 作灶]

Chong/Sha: 冲虎煞南.

Gods: 月恩 四相 王日.

Explanation: Focus on "Four Phases" (Si Xiang) and "King Day" (Wang Ri).

(Self-Correction on "10字左右说明"): If the user really meant 10 characters, the article won't reach 1800 words. It is highly probable they meant "10 sentences" or "100+ words". I will aim for a dense, roughly 150-word analysis per date to ensure depth and word count, ignoring the likely typo "10字" in favor of the instruction "analyze like an expert... detailed elaboration".

Formatting Check:

Line 1: Date/Day/Zodiac.

Line 2: [Yi]

Line 3: [Ji]

Line 4: Chong/Sha.

Line 5: Ji Shen.

Line 6: Xiong Sha.

Line 7: Explanation block.

4. Drafting Content (Mental Sandbox for Tone):

Instead of "You should choose this day," use "此日天干地支相合" (This day's stems and branches are in harmony).

Instead of "Don't do this," use "忌行此事" (Avoid doing this).

Vocabulary: 缔结 (Establish), 纳采 (Betrothal), 嘉礼 (Wedding ceremony), 冲克 (Clash), 避讳 (Taboo).

5. Expanding to 1800 words:

To reach high word count without filler words ("therefore", "so"), the "Explanation" sections must be dense with astrological reasoning.

I will include about 10-12 dates.

Each date entry needs to be substantial.

6. Execution (Generating the specific dates and details):

Date 1: May 2 (Good for marriage)

Date 2: May 9 (Good for marriage)

Date 3: May 12 (Good for marriage)

Date 4: May 15 (Good for marriage)

Date 5: May 21 (Good for marriage)

Date 6: May 22 (Good for marriage)

Date 7: May 24 (Good for marriage)

Date 8: May 28 (Good for marriage)

Date 9: May 30 (Good for marriage)

Date 10: May 31 (Good for marriage、 check almanac, usually okay).

Refining the "Explanation" logic:

For each date, I must synthesize the Spirits (Shen Sha).

Example: "Tian Xi" (Heavenly Joy)、> Mention happiness/procreation.

Example: "Yu Tang" (Jade Hall)、> Mention status/nobility.

Example: "Chong" (Clash)、> Be specific about the animal sign and direction.

7. Review against Negative Constraints:

No "In this article"、> Check.

No "Therefore/However"、> Check.

No "Summary/Conclusion" headers、> Check.

No "Very/Extremely"、> Check.

Format: Line by line、> Check.

8. Final Polish: Ensure the tone is dry, clinical, yet authoritative "Old Almanac" style.

(Self-Correction during generation): The user asked for "10字左右" (around 10 words) description but then asked for a list of complex requirements that fit a long paragraph. I will interpret the user's intent as "Detailed Expert Analysis" (as per the 1800 word count request) and ignore the "10字" constraint as a contradiction/typo. I will produce a solid block of text for the analysis to meet the "expert" and "word count" criteria.

Wait, looking at the prompt again: "撰写一段10字左右的‘说明’：这是关键，要像专家相同分析..."

This is a hard contradiction. "Write a description of about 10 words: This is key, analyze like an expert [list of 5 complex things including lucky times, activities, meaning of gods]".

Possibility A: The user wants a 10-word summary followed by the analysis?

Possibility B: The user meant 10 lines?

Possibility C: The user meant "100-200 words"?

Given the explicit instruction for "1800+ words" total and "detailed elaboration," Possibility C is the only logical path. I will write detailed analyses.

Year selection: I will use 2024 (Jia Chen Year) as the reference model to provide concrete, accurate simulation.

9. Constructing the Output: (Proceeding to generate the response based on the thought process).