Most beasts in the desert grew stronger at a very slow rate. Most humans took years to grow strong enough to fight against these beasts as well.
So Whisker understood that he could not expect a very quick improvement to his strength. And yet, he was still somehow disappointed by how slow his speed had become.
In the past 2 days, he had grown by 2 realms at most, with his body cultivation now being somewhere around Immortal Ascendant 4th realm. At the rate he was growing stronger, it would take 2 more days to reach the 5th realm.
Then maybe a week to reach the 6th realm, and so on.
Reaching the Immortal Transcendent 1st realm, which a regular jar full of Elixir helped one reach, would take Whisker years to do so.
'I don't have that sort of time,' he thought. He understood he was being selfish, but he had no other choice. He couldn't spend years just cultivating in the sludge down below.
The slow improvement rate was an issue that Whisker wanted to circumvent somehow.