Chapter 56: Undergraduates Are Inferior to Dogs, Graduate Students Are Everywhere

Zhang Yuan had interned on the spaceship for a year already, making him quite familiar with the entire living area structure.

He woke up hungry and stepped out of his room, intending to go to the dining hall for a meal.

The air was fresh, with Pu Pu Grass growing in water basins around the hallway. Under the influence of light, it converted the carbon dioxide exhaled by humans into oxygen.

This seaweed-like plant grew swiftly, producing sweet grape-like fruits in about 28 days. If one wanted to eat them, they could freely pick them, as everything along the path was free of charge.

The ceiling's lights were similar to sunlight. During night, these artificial light sources turned dimmer and softer, making it easy for people to distinguish between day and night.

A few men and women passed by Zhang Yuan, excitedly discussing.

"Carbon oxygen cycling is a complex science. If the proportions of carbon dioxide and oxygen go out of control, people can easily be poisoned..."