After discovering the oxygen problem, Chen Xin initially wanted to return to his shelter. However, after resting for a bit and feeling somewhat recovered, Chen Xin hesitated but still proceeded towards his intended goal.
On one hand, the oxygen problem was not yet severe. Although there were symptoms of oxygen deficiency, it wasn't much different from high-altitude sickness caused by thin air in high-altitude areas.
Moreover, after carefully feeling it, Chen Xin found that the burden was merely making his breathing a bit rapid and slightly gasping. As long as he didn't walk too quickly, he could still endure the current state.
Since there wouldn't be a major problem, Chen Xin didn't want to waste the hard-earned opportunity to search for resources. After all, the "Fatty Happy Water" he found before gave him great encouragement, making him more eager and hopeful to find more resources in the supermarket he targeted.