Jiang Lan would focus on setting up the array formation when the sun rose and cultivate when the sun set.
Jiang Lan kept repeating the same routine.
In the fifth year, Jiang Lan completed the outer array formation and began to set up the inner array formation.
This was set up using his Senior Sister's blood.
The array formation was more or less set up, but it didn't have any power because it required his Senior Sister's blood.
Otherwise, it would be easy for the heavenly tribulation to determine that there was an outsider helping her transcend the tribulation, making the process much more dangerous.
If outsiders could help one transcend one's tribulation, no one from Kunlun would fail his or her tribulation.
Jiang Lan set up the internal array formation very slowly. He carved and connected every inscription bit by bit.