Translate TYPO3.Neos.NodeTypes:Page properties in Site package


I added a few layout and sublayout options to TYPO3.Neos.NodeTypes:Page node type in Packages/Sites/My.SitePackage/Configuration/NodeTypes.yaml. I tried to localize the options in Packages/Sites/My.SitePackage/Resources/Private/Translation/zh/NodeTypes/Page.xlf. But the translation is not loaded in the Neos backend editing interface. Though other node types defined in the site package can load the translation correctly. Any idea please?

Here is the solution