```
Under such circumstances, He Song would certainly not place himself in danger.
And his actions this time were naturally no exception.
Therefore, as the number of spirit stones on He Song's person began to increase.
His personal safety was not threatened as a result.
With He Song's cautious approach,
although he had sold many Nine Revolutions Spiritual Marrow Elixirs, which significantly increased the number of spirit stones he possessed,
his existence did not attract the attention of others.
He Song himself never sensed anyone trailing him.
Thus, He Song naturally became more at ease and continued his cultivation without interruption.
As time went by,
and as He Song's success rate for refining the Nine Revolutions Spiritual Marrow Elixirs continued to increase,
the quantity of spirit stones he had also grew.
At the same time, He Song began to gradually master the four other single-recipe elixirs he knew while refining Nine Revolutions Spiritual Marrow Elixirs.