From the beginning to the end, Song Shi did not go out. It took him three years to find a way to directly break through his cultivation level and raise his cultivation level to the Golden Core level in one go. Later on, he quickly improved it every once in a while by constantly searching for loopholes in the rules.
As for increasing the attributes of his physical body, he played with it to perfection. Not only did he increase it on himself, but he also tried it on the chickens, ducks, fish, rabbits, geese, and dogs he raised.
It was not that he was bored, but that he could strengthen the bodies of different living beings and comprehend different situations to break the shackles of his own body.
He called the target of his physical body's cheat shackles. Every time he cracked them, his physical attributes would increase.
