The game only has 8 years of life, so I choose to play all in

Ding Yi, who had inexplicably traveled to another world, became more and more panicked these days.
He found that the old couple who kindly adopted him always peeped at him outside the door in the middle of the night.
The suppressed excited breathing and swallowing sounds outside the door made Ding Yi have no doubt that the old couple would break in and kill him the next moment.
Ding Yi wanted to escape from here, but found that this was the end of the dynasty and evil spirits were everywhere. Ding Yi, who was in despair, suddenly found that he could spend his life to strengthen everything.
Consume one month of life, strengthen the wooden board into a sophisticated mechanical crossbow!
Consume two months of life, strengthen the pit into a sophisticated trap!
All in! All in!! Strengthen this pile of straw paper with villains drawn on it for me!!
Strengthening is successful, congratulations on obtaining the martial arts "Eternal Youth Secret"!!