I understand that subcities can be captured by players after being attacked 8-11 times, depending on their march power. However, I'm curious to know when this number resets. Does it reset on a daily basis, similar to repairing walls in your main city? Will it reset after a bubble? I would appreciate it if you could provide more insight into these dynamics as I aim to target KoS players' subcities and safeguard mine, especially when I need to unbubble to attack keeps.