C436 Dragon-suppressing and Dragon-locking

"It seems that this matter is indeed extremely difficult!" Lin Bai reached out his hand to rub the creases of his forehead and softly said, "Master Zhang, you've stayed in Kaifeng for these past few years, and have yet to take even half a step. Could you be searching for the key to sealing the dragon's vein?"

The ancients had the clouds: three years to seek the dragon