The version in yakkety is the following: kde-l10n-zhcn | 4:15.12.3-0ubuntu2 | yakkety/universe | source, all
The version you uploaded for xenial is identical and needs to be versioned correctly such that it is less than yakkety. See this wiki for suggestions: https://wiki.ubuntu.com/SecurityTeam/UpdatePreparation#Update_the_packaging
The version in yakkety is the following:
kde-l10n-zhcn | 4:15.12.3-0ubuntu2 | yakkety/universe | source, all
The version you uploaded for xenial is identical and needs to be versioned correctly such that it is less than yakkety. /wiki.ubuntu. com/SecurityTea m/UpdatePrepara tion#Update_ the_packaging
See this wiki for suggestions:
https:/