High Vohohm

 Kai Syaoran stayed in seclusion and continued cultivating the Fiend Heart Path.

In the first two steps of cultivation, this technique did not require much other than purifying the blood, creating blood qi and strengthening the heart even more.

Kai Syaoran found no problems while doing this and the comprehension he needed about the laws of blood was not that difficult with his comprehension ability and the Solitude realm.

He cultivated in peace and to make sure that no one disrupted this peace, he came out of his cultivation once in a while and showed his face for a few seconds before returning to his cultivation. He did this for three years and inside the Time Castle, this was decades.

He was able to reach the peak of the second step of cultivation in this time.

It was time to break through to the third step but this was when things became difficult in this cultivation system.