How to install the Chinese language pack for Openwrt 19.07

After upgrading the router to 19.07.1, I found that after installing the luci-i18n-base-zh-cn Chinese package, some places were still in English. After verification, it was because luci added another file: luci-app-opkg

As shown in the figure below, after installing the luci-i18n-base-zh-cn Chinese package, some parts are not translated into Chinese

So we need to install the following two packages

luci-app-opkg

luci-i18n-opkg-zh-cn

After the installation is complete, everything becomes Chinese