diff --git a/parser.py b/parser.py
index 9108f38..6adffe2 100644
--- a/parser.py
+++ b/parser.py
@@ -193,7 +193,8 @@ _gz_era_group = r'(?P<era>' + '|'.join(
 # === 数字转中文 ===
 def arabic_to_chinese_year(num: int) -> str:
     """公元年份转中文（逐位体）：1662 → 一六六二，-140 → -一四〇。
-    公元年份读作逐位数字，故不适用计数体规则（见 arabic_to_chinese_count）。"""
+    公元年份读作逐位数字，故不适用计数体规则（见 arabic_to_chinese_count）。
+    返回值不带"年"单位——字段"公元中文"与"年数中文"一样只给数字写法，单位由前端拼接。"""
     digits = "〇一二三四五六七八九"
     if num < 0:
         return '-' + ''.join(digits[int(d)] for d in str(abs(num)))
@@ -433,7 +434,7 @@ def extract_era_years(text):
             "年号": "民国纪年",
             "年数": year_num,
             "公元": gregorian,
-            "公元中文": f"{arabic_to_chinese_year(gregorian)}年",
+            "公元中文": arabic_to_chinese_year(gregorian),
             "位置": {"起始": start, "结束": end},
             "类型": "民国纪年",
         }
@@ -479,7 +480,7 @@ def extract_era_years(text):
             "年数": year_in_era,
             "干支": ganzhi,
             "公元": gy_year if gy_year is not None else computed,
-            "公元中文": f"{arabic_to_chinese_year(gy_year if gy_year is not None else computed)}年",
+            "公元中文": arabic_to_chinese_year(gy_year if gy_year is not None else computed),
             "位置": {"起始": start, "结束": end},
             "类型": "民国纪年（干支）",
         }
@@ -533,7 +534,7 @@ def extract_era_years(text):
             "年号": era,
             "年数": year_in_era,
             "公元": year_num,
-            "公元中文": f"{arabic_to_chinese_year(year_num)}年",
+            "公元中文": arabic_to_chinese_year(year_num),
             "位置": {"起始": start, "结束": end},
             "类型": "年号+公元",
         }
@@ -592,7 +593,7 @@ def extract_era_years(text):
             "原文(简体)": m.group(0),
             "干支": ganzhi,
             "公元": gy_year,
-            "公元中文": f"{arabic_to_chinese_year(gy_year)}年",
+            "公元中文": arabic_to_chinese_year(gy_year),
             "位置": {"起始": start, "结束": end},
             "类型": "干支纪年",
         }
@@ -656,7 +657,7 @@ def extract_era_years(text):
             "原文(简体)": simplified_text[start:end],
             "类型": era_type,
             "公元": year_num,
-            "公元中文": f"{arabic_to_chinese_year(year_num)}年",
+            "公元中文": arabic_to_chinese_year(year_num),
             "位置": {"起始": start, "结束": end},
         }
         if ganzhi in _ganzhi_to_offset:
@@ -713,7 +714,7 @@ def extract_era_years(text):
             "年数": year_in_era,
             "干支": ganzhi,
             "公元": gregorian,
-            "公元中文": f"{arabic_to_chinese_year(gregorian)}年",
+            "公元中文": arabic_to_chinese_year(gregorian),
             "位置": {"起始": start, "结束": end},
             "类型": "干支纪年",
         }
@@ -787,7 +788,7 @@ def extract_era_years(text):
             "朝代": dynasty,
             "庙号": temple,
             "公元": base,
-            "公元中文": f"{arabic_to_chinese_year(base)}年",
+            "公元中文": arabic_to_chinese_year(base),
             "位置": {"起始": start, "结束": end},
             "类型": "庙号纪年",
         })
@@ -858,7 +859,7 @@ def extract_era_years(text):
                 "年号": era,
                 "年数": year_num,
                 "公元": gregorian,
-                "公元中文": f"{arabic_to_chinese_year(gregorian)}年",
+                "公元中文": arabic_to_chinese_year(gregorian),
                 "位置": {"起始": start, "结束": end},
                 "类型": "古代纪年",
             }