After the duel with Zi Dong, Jian Wushuang returned to his residence.
A piece of empty land.
"Go!"
Jian Wushuang controlled the scarlet longsword formed by 36 Blood-sky Swords. The longsword shot out forwards.
It traveled at a breathtaking speed. Suddenly, Jian Wushuang felt a tug in his heart. He controlled the longsword to change direction mid-air.
The change in direction immediately caused the sword to pause temporarily. After which, there was an obvious slow-down in its speed.
"Its forward attack was acceptable, but once it changes direction, its speed slows down a lot."
"Awkward, it is indeed very awkward."
"Seems like I have to spend a long time to investigate this Ninth-heaven Sword Formation properly."
Jian Wushang spoke to himself.
In the following days, Jian Wushuang naturally continued to cultivate on his own.