To save costs, she noticed that the warriors' paper was written on both sides, densely packed, never wasting any space. As for envelopes, they would buy kraft paper envelopes whenever possible, as these envelopes were sturdy and opaque. Family members could even turn the envelopes over and use them again.
Of course, there were almost none among them who were completely illiterate; they had all attended school for a few years at the very least. Each dormitory had a dictionary—if someone didn't know a word, they'd ask if they could, or look it up in the dictionary otherwise. Through observation, Zheng Long noticed their Pinyin was not standard; they only learned how to use the dictionary after their squad leader taught everyone. Even after being taught, some still couldn't do it, so most would ask others, eventually realizing that he knew and understood the most.
