"There's one more thing I must keep in mind!"
After finishing his thoughts, Nie Yun carefully inspected his body and revealed a solemn expression. "Once the Fusion Dao is used within my body, it leaves traces behind. The more often I use it, the heavier those traces become. Once I reach the God Realm, they can easily be glimpsed by the Heavenly Dao... In other words, unless it is absolutely necessary, I cannot casually use the Fusion Dao even within a Small World!"
The Fusion Dao was immensely powerful. Once used, it would inevitably bring enormous leaps in both the body and soul. Even after it was no longer used, those changes would remain within the body and be detected by the Heavenly Dao.
It was like a stream flowing through a ditch. Even if it was cleaned afterward until spotless, traces such as water stains would still remain.
Using the Fusion Dao within a Small World could block the punishment of the Heavenly Dao, but some of its power would remain inside the body. The more it was used, the more traces it would leave behind. Once they accumulated over a long enough time, the Heavenly Dao would still send down punishment.
Therefore, for his own safety, however powerful the Fusion Dao was, he still had to use it sparingly.
"Judging by the amount of traces left in my body, I can use it at most around ten times..."
Based on the traces the Fusion Dao had left in his body just now, Nie Yun calculated that after using it around ten times, he might be discovered by the Heavenly Dao.
That was to say, before he dared to directly challenge the Heavenly Dao, he still could not use it as he pleased!
Otherwise, once the Heavenly Dao discovered