According to his regular blood-drinking schedule, Xiang Kun should have felt hunger on Nov 4, which was yesterday morning, and had his usual blood intake.
Based on his last recorded intake, he would have needed the blood of four Belgian rabbits this time. If the quantity did increase, it would be at most five rabbits.
However, to Xiang Kun's surprise, after drinking blood from four rabbits, he was still strongly hungry. As a result, he took blood from two more rabbits.
Even after having the blood of six rabbits, he was still hungry.
Originally, there were six chubby Belgian rabbits reserved in Xiang Kun's house. According to previous experiences, his blood intake should have shown stable linear growth. Under normal circumstances, having consumed four rabbits last time, reserving six rabbits should have given quite a large allowance.