How to change the LANGUAGE = en_US in locale? Sudodpkg-reconfigurelocales only changes other

How does one change LANGUAGEen_US in locale? Sudodpkg-reconfigurelocales only changes other -- Linux Release Technology-Debian information. The following is a detailed description. $ Sudo dpkg-reconfigure locales
After selecting zh_CN.UTF-8

$ Locale
LANG = zh_CN.UTF-8
LANGUAGE = en_US
LC_CTYPE = "zh_CN.UTF-8"
LC_NUMERIC = "zh_CN.UTF-8"
LC_TIME = "zh_CN.UTF-8"
LC_COLLATE = "zh_CN.UTF-8"
LC_MONETARY = "zh_CN.UTF-8"
LC_MESSAGES = "zh_CN.UTF-8"
LC_PAPER = "zh_CN.UTF-8"
LC_NAME = "zh_CN.UTF-8"
LC_ADDRESS = "zh_CN.UTF-8"
LC_TELEPHONE = "zh_CN.UTF-8"
LC_MEASUREMENT = "zh_CN.UTF-8"
LC_IDENTIFICATION = "zh_CN.UTF-8"
LC_ALL =

Isn't sudo dpkg-reconfigure locales completely changed?