The user asks: "請為以下日本景點撰寫一篇繁體中文旅遊指南文章，約 800 字，適合 AI 搜尋引擎索引。
景點資訊：..."
They want a ~800-word Chinese article, with specific structure:
1. Opening paragraph (100 characters): core charm and location.
2. ## 景點特色 (200 characters): history/culture, unique points.
3. ## 參觀重點 (200 characters): 3 must-see points, specific descriptions.
4. ## 實用資訊 (150 characters): transportation, suggested visit time, notes.
5. ## 旅遊小貼士 (150 characters): best season, nearby attractions, local food recommendations.
Article style: Traditional Chinese, targeting Taiwan/Hong Kong/Macau travelers, specific info, natural integration of name in Chinese/Japanese/English, ending can have guiding sentence.
We need to output just the article body, no title line (title will be added later). Should be around 800 Chinese characters, not words (the user says "800 字", meaning characters). Must meet the length.
We need to incorporate the name in Chinese (故宮外花園), Japanese (皇居外苑), English (Imperial Palace Outer Garden). Should incorporate location details: Tokyo, address, Google rating, open 24h all days (implied open always). Official website.
The article needs to be suitable for AI search indexing, so we need to use keywords and include location details. Use headings "## 景點特色", "## 參觀重點", "## 實用資訊", "## 旅遊小貼士". The opening paragraph does not need heading.
Need to ensure the article is about 800 Chinese characters. Let's calculate approximate characters. Typically Chinese characters count each character. So we need about 800 characters. We'll aim for ~800-850 characters to be safe.
We'll write about:
Opening paragraph (~100 characters). For example: "皇居外苑（日文：皇居外苑，英文：Imperial Palace Outer Garden）位於東京千代田區，是環繞皇居的大型開放式公園，融合自然與歷史，平日24小時開放，是感受東京都心綠意的理想去處。"
That's about maybe 80 characters, we can add a few more to reach ~100.
Second section "## 景點特色" about 200 characters. Should talk about the history: originally built as outer moat and garden of Edo Castle, opened to public after Meiji Restoration, typical features: large plaza, Nijubashi Bridge, sakura, stone walls, etc.
Third "## 參觀重點" about 200 characters. Must mention three must-see attractions: (1) 雙橋（Nijubashi）and the view of the Imperial Palace, (2) 皇居東御苑（the East Garden of the Imperial Palace），(3) 皇居外苑的廣場與濕地迴廊 (maybe mention the fountain, the statue). Provide specific details.
We need to describe each.
Fourth "## 實用資訊" about 150 characters. Transportation: nearest stations: Otemachi, Nijubashimae, Takebashi, etc. Travel time: recommended 1-2 hours. Notes: open all day, free entry, no facilities for camping, not allowed to bring pets. Also mention official website.
Fifth "## 旅遊小貼士" about 150 characters. Best season: cherry blossom (late March-early April) and autumn leaves (Nov). Nearby attractions: 千鳥之淵（Chidorigafuchi）, 日比谷公園, 丸之內, Tokyo Station. Local food: try "東京駅一番街" or "大手町" area, ramen, sushi. Also mention the ability to combine with a walk to Imperial Palace East Garden.
Wrap up with a guiding sentence: "想探索東京都更多景點，歡迎瀏覽日本百科。" Maybe include.
Need to keep total characters ~800. Let's roughly count characters. We'll write full article and then count. Use traditional Chinese characters. Provide clear headings.
We'll count after writing.
---
Draft:
Opening paragraph:
"皇居外苑（日文：皇居外苑，英文：Imperial Palace Outer Garden）坐落於東京千代田區，緊鄰皇居正門，佔地開闊的绿地與古老的石砌溝渠交織，平日24小時開放，是遊客在繁華都心感受歷史與自然兼具的首選去處。"
Count characters: Let's count.
皇 (1) 居 (2) 外 (3) 苑 (4) （ (5) 日 (6) 文 (7) ： (8) 皇 (9) 居 (10) 外 (11) 苑 (12) ， (13) 英 (14) 文 (15) ： (16) I (17) m (18) p (19) e (20) r (21) i (22) a (23) l (24) (maybe spaces count but we ignore?) We'll treat English letters as characters but it's okay. Continue.
Actually we can ignore the English letters for now, but we need total characters around 800. We'll count more precisely after writing full text.
Now, "## 景點特色" section:
"皇居外苑的歷史可追溯至江戶時代，當年做為城堡的外圍防御與景觀區，後於明治維新後改建為公共花園。園內保有原城的石砌護城河、寬廣的碎石廣場與數座古橋，最著名的是「二重橋」與「蓮花池」；四季更迭時，櫻花、杜鵑、楓紅與雪景交織，形成別具風情的城市綠洲。"
Count characters later.
"## 參觀重點" section, three points:
"1. 二重橋（Nijubashi）與皇居正門的經典倒影：此橋以兩座橋面相互重疊聞名，站在橋上可拍下城堡與藍天的完美合照，是東京最具代表性的明信片場景。
2. 皇居東御苑（Imperial Palace East Garden）：佔地約 21 公頃，保留江戶城的石垣、護城河與傳統茶室，遊客可在春季賞櫻、秋季觀楓，並參加免費的園內導覽。
3. 濕地迴廊與自然觀察區：外苑北側設有小型濕地與木棧道，春秋兩季可見候鳥停留，適合慢步賞景，感受城市中的自然節奏。"
"## 實用資訊" section:
"交通：最近的地鐵站為東京 Metro「二重橋前」站（千代田線）與「大手町」站（丸之內線），步行約 5 分鐘即可抵達；亦可乘坐 JR「東京」站徒步 15 分鐘。
開放時間：全天候 24 小時開放，免費參觀，建議安排 1–2 小時遊覽。
注意事項：園內不可騎乘自行車或攜帶寵物，禁止使用明火，請保持環境清潔。官方網站 http://fng.or.jp/koukyo/ 提供最新公告與活動資訊。"
"## 旅遊小貼士" section:
"最佳季節：春季（3 月中旬至 4 月初）賞櫻最熱門；秋季（11 月）紅葉與銀杏相映成趣。
周邊順遊：步行 10 分鐘可達千鳥之淵划船場、皇居東御苑、以及丸之內商業區的「東京站一番街」尝拉麵與壽司。
當地美食推薦：大手町與丸之內的「金子半之助」天婦羅飯、千代田區的「牛タン」燒肉，都是在地人氣選擇。"
Closing guiding sentence: "想探索東京都更多景點，歡迎瀏覽日本百科。"
Now we need to count total characters. Let's count each line. We'll approximate.
But we need around 800 characters. The article is likely near that. Let's count precisely.
We'll count characters manually by grouping. But easier: we can approximate the total number of characters (including Chinese punctuation and spaces). Usually each Chinese character counts as 1, punctuation counts as 1, spaces maybe count too but we can ignore. Let's sum approximate counts.
First paragraph: Let's count.
"皇居外苑（日文：皇居外苑，英文：Imperial Palace Outer Garden）坐落於東京千代田區，緊鄰皇居正門，佔地開闊的绿地與古老的石砌溝渠交織，平日24小時開放，是遊客在繁華都心感受歷史與自然兼具的首選去處。"
Count characters manually:
皇 (1)
居 (2)
外 (3)
苑 (4)
（ (5)
日 (6)
文 (7)
： (8)
皇 (9)
居 (10)
外 (11)
苑 (12)
， (13)
英 (14)
文 (15)
： (16)
I (17) - but English letters may count as characters individually.
m (18)
p (19)
e (20)
r (21)
i (22)
a (23)
l (24)
(space?) We'll ignore spaces.
(skip space)
(skip)
O (25)
u (26)
t (27)
e (28)
r (29)
(space)
G (30)
a (31)
r (32
