Jing Yan's total Heavenly Palace Points were 120 million. If he used 20 million points to exchange for Green Mucous, it would be like using one-sixth of his points to acquire something that wouldn't help his cultivation much.
Vice Palace Master Ye Zhen's dissuasion was, naturally, out of kindness. After all, Jing Yan was in a rapid growth phase, consuming many resources for cultivation. Once he reached the Controller Level in the future, accumulating resources would be much faster than consuming them. Then, exchanging or purchasing something as precious and useless to him as Green Mucous would be relatively reasonable.
Honestly, spending 20 million points made Jing Yan's heart ache.
However, he had already promised Little Black he would exchange for Green Mucous.
In his home universe, Little Black's help to Jing Yan was immense. Without Little Black, no one could tell where Jing Yan would be now.
