This is a magical experience of going through a woman's trap of being cheated by the system, and then cheating the system in turn.
Pessimistic version: Damn, time travel! During the day, I work hard to live a good life, and at night, I have to work hard to survive. This life is unbearable!
Optimistic version: Oops, time travel! During the day I tried my best to eat and drink, and at night I secretly entered the game, saved supplies, and exchanged them for real goods. I was so jealous of those who were against me!
Purpose: Perseverance leads to Rome