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Shin spent the next two days training the same task that was given to him.
He was going to wake up before the sun rose. Then he immediately did some foundation training before climbing down the mountain to take some water at the river. And given that he already went on the same path on the first day, he immediately became familiar with the road. Due to that, filling the wooden barrel became too easy for him.
With that, he got a lot of free time before the sun could even rise. But he didn't take that time to rest. Instead, he immediately proceeded at the next training plan without wasting much of his time.