df = pd.read_excel(r"C:\Users\黄伟\Desktop\chinese_english.xlsx")
display(df)

def func(x):
  year = x.split("年")[0]
  month = x.split("年")[1].split("月")[0]
  day = x.split("年")[1].split("月")[1].split("日")[0]
  if len(day) >= 3:
    day = day[0] + day[2]
  chinese_english = dict(零=0,一=1,二=2,三=3,四=4,五=5,六=6,七=7,八=8,九=9,十=10)
  year = "".join(str(chinese_english[i]) for i in year)
  month = "".join(str(chinese_english[i]) for i in month)
  day = "".join(str(chinese_english[i]) for i in day)
  if len(month) == 3:
    month = month[0] + month[2]
  if len(day) == 3:
    day = day[0] + day[2]
  final_date = year + "." + month + "." + day
  return final_date

df["final_date"] = df["日期"].apply(func)
display(df)