What martial arts did Wu Zhu teach Fan Ruoruo?

Wu Zhu had taught Fan Ruoruo how to use a sniper rifle.

Wu Zhu taught Fan Ruoruo shooting and sniper rifle techniques.

Wu Zhu taught Fan Ruoruo sniping techniques and how to use the Barrett. Fan Ruoruo learned how to use the Barrett sniper rifle under Wu Zhu's guidance and became one of Fan Xian's trump cards to kill the Qing Emperor.

Wu Zhu taught Fan Ruoruo how to use the Barrett.

Wu Zhu had taught Fan Ruoruo how to use the Barrett sniper rifle.

Wu Zhu had taught Fan Ruoruo how to use the Barrett sniper rifle.

Wu Zhu had taught Fan Ruoruo how to use the Barrett sniper rifle.

Wu Zhu had taught Fan Ruoruo how to use the Barrett sniper rifle.

Wu Zhu had taught Fan Ruoruo how to use a sniper rifle.

Wu Zhu had taught Fan Ruoruo how to use a sniper rifle.