So the main point of wanjian's return to the sect is this. If you can make moves at any time and achieve the effect of forming water blade, then it can be basically completed.

at this time, ye Tian suddenly makes a move, and the sword Qi flies out against the water. Not long ago, he sees a incomplete water blade flying out, but when it hits the waterfall, it still spreads.

Ye Tian is a little depressed. It's hard to form a water blade. But obviously, the strength and speed are not good enough to penetrate the waterfall rapids.

but he didn't worry. It wasn't something that could be...