Hark desperately tried to run and free himself from those mana shackles, but it was useless.
These shackles are enhanced by 'Mana singularity'; it's extremely difficult to break them.
Unless you use the power of a 'law' or another 'legendary skill' like 'Sword Intent' or 'Dao Rhythm' to counter this, there's no breaking these shackles now.
"L-let me go! Let me go! I am innocent! We were just mere pawns! We only followed the orders of the boss!! He accepted the assassination request given by the Blaze family to assassinate your mother!!"
"We have been hiding like rats since the day we found out that you became strong!"
"I am telling you the whole truth! I know nothing more than that!"
To save his life and avoid getting tortured, Hark immediately spilled all the beans.
Although, as an assassin, it is against the code to be spilling all the information, he's already retired from that job, and he no longer wants to risk his life anymore.