Trust

After learning the immortal weapon refinary art Xiu Luo is decided to first restore his spiritual qi which had depleted in his spiritual sea. And he took out the spiritual portion and then gulped it down and started mediating. After one hour his depleted spiritual sea restored. Even though his spiritual sea restored but Xiu Luo didn't stop but continued swallowing the potions one after another and now only one fourth of the portion was remained and he immered in the cultivation.

Boom.....

After some time there is a noice came from Xiu Luo spiritual sea as he had a small breakthrough from peak sixth rank to intermediate seventh rank and due to the breakthrough his spiritual sea expanded.

If anyone would have refined the same amount of resources as Xiu Luo their cultivation would have rocketed atleast two small levels but Xiu Luo's cultivation is slow due to the spiritual sea as it requires vast amount of resources.