Ever since his strength attribute passed the 10 point mark, Angus' strength hardly improved with conventional training. No matter how harsh and long the training, he could never increase his strength.
The only way to increase his strength is by spending Soul Points. Previously, Angus thought this was normal since the human race without a mana core could only reach around this level of physical strength.
Any other conventional training will hardly affect this level. Hence, he didn't expect his strength to increase naturally, especially with his high current strength.
Calming his surprise, Angus decided to continue his climbing. He is eager to know if he can increase his strength again. If he could increase it, he may save a lot of Soul Points for another attribute.
Consider that a single increase will consume more than five thousand Soul Points and by the time it reaches 60 points, he needs more than ten thousand Soul Points to increase a single attribute.