Translation doesn't work?

[ANi]

Hello.
The only word that has been translated is "name", but it seems that it is 
the default one in Django.
So basically my translation does not work at all..........
please help 

Here is what I've done so far...

settings.py
MIDDLEWARE = [
 ...
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.locale.LocaleMiddleware',
 ...
]


LANGUAGE = [
 ('en-us', 'English'), 
 ('zh-Hant','繁體中文'), 
]


LANGUAGE_CODE = 'zh-Hant'


USE_I18N = True

USE_L10N = True

...


LANGUAGE_PATHS = os.path.join(BASE_DIR, "locale")


part of django.po

#: .\main\models\center.py:43 .\main\models\company.py:18
#: .\main\models\company.py:33 .\main\models\log.py:70
#: .\main\models\select.py:17 .\main\models\select.py:33
#: .\main\models\item.py:95 .\templates\main\main.html:11
msgid "name"
msgstr "名稱"


#: .\main\models\item.py:98 .\templates\main\main.html:13
msgid "value"
msgstr "價值"


#: .\main\models\item.py:102 .\main\models\log.py:98
msgid "currency"
msgstr "幣別"



part of main.html
{% load static %}
{% load filters %}
{% load i18n %}
{% block container %}
 <table id="asset-table" class="tablesorter-header-inne tablesorter-dropbox"
>
 <thead>
 <tr>
 <th field="name" align="right" sortable="true">{% trans 'name' %}</th>
 <th field="value" align="right" sortable="true">{% tans 'value' %}</th>
 ...


part of item.py
from django.utils.translation import gettext_lazy as _
...

class Asset(models.Model):
     name = models.CharField(_('name'), max_length=255)
     value = models.IntegerField(_('value'))
     currency = models.ForeignKey(Currency,
                                  null=True,
                                  on_delete=models.SET_NULL,
                                   verbose_name=_('currency'))
     ...

filte structure
myproject
     - main_app
     - common-statics
     - templates
     - myproject
     - locale
         - zh-hant
           -LC_MESSAGES
             - django.mo
             - django.po


thanks!


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