(Back up all the files in the admin directory of the program (because the template modifies a lot of core content under admin) or you will be responsible for the consequences.
Unzip the downloaded compressed package, upload all the files in the lscale folder to the admin directory of the program and overwrite them; (the corresponding directory file name has been checked, directly upload the root directory to decompress)
Upload the entire tpl_option folder to the content/plugins/ directory of the program (if the template setting plugin is installed, please back it up) (directly overwritten))