Electromagnetic Water Manipulation sounds like something out of a fantasy, but in reality, it is a rather simple skill. Electrons inherently have electromagnetic interactions, so all molecules containing electrons have magnetic moments. However, the magnetic moments in most objects are scattered and cancel each other out. Only a very few objects can spontaneously generate magnetism.
By using a complex magnetic field to align the magnetic moments of water molecules, a very strong magnetization can be produced. This was a technique that Wang Qi had mastered during the Qi Cultivation Stage. However, before, he lacked sufficient mana to use this method to defend against such powerful Water Element Magic.