Scraping together resources, just enough to sustain these people for a year's supply.
But now, the Chu army has already besieged the city for half a year.
And it looks like the siege will continue, lasting another year is just a matter of time.
Once a year passes, no matter how frugally the city conserves food, they will face a crisis of complete grain depletion.
If the million-strong Xu Army outside the city joins in, that would mean a doubling of grain consumption.
Let alone holding out for another half a year, whether they can last another two or three months until winter brings snow is also in question.
By then, there's a fear that without the Chu Army lifting a finger, the people of Liang and Xu within the city will starve to death due to the food issue.
At that point, the enemy will collapse without a fight, and the Chu Army will easily take the entire city of Da Liang.
Just from this aspect, Chu State isn't the least bit worried about the arrival of the Xu people.