Guys how do i upgrade my walls in the fastest way possible? im a newborn th10 my defences are average but my walls are only lv6. It makes my base look like a joke. I cant seem to upgrade walls.. it costs 200k per walls and there are 250 walls. just thinking of the gold needed to get full lv7 or even lv8 walls gives me a headache.. how do you upgrade your walls quickly? Thanks :)

