Any normal connector to connect Aurora Lightstrip Plus?

Hi there, I am in the midst of getting a custom display cabinet (refer to example below) and bought quite a number of Xiaomi Mi Yeelight Aurora Lightstrip Plus Strip & Extended Strips to light up the cabinet. However, I just realised that in order for me to use the Lightstrip Plus on each shelf (level), I need to connect them through the back of the cabinet (to keep the wires hidden). It does not make sense to use the Extended Strips to connect each shelf as the back of my cabinet will be lit up if you get what I mean.

Anyone knows if there is a workaround for this? I could not find any normal connectors to connect the Plus Strip/Extended Strips.