How can I jump to the next sibling of an XML element with Vim?
If you need this motion often, it makes sense to create a custom motion for it. With my CountJump plugin, this is very easy:
call CountJump#Motion#MakeBracketMotion('<buffer>', '', '', '<Child', '<Child.*\zs/>\|</Child>', 0)
This will modify the [[
[]
etc. motions (you can also choose other mappings), and supports a count, too. (Put this into e.g. ~/.vim/ftplugin/xml_motions.vim
.)