The epidemic inflection point cannot be predicted yet, but the peak should occur in mid to late February, with the epidemic inflection point determined by the prevention and control of the return peak. It is difficult to avoid a rising inflection point of the epidemic after the falling inflection point due to the return wave of population movement. Whether returning by train, coach, or airplane, the confined environment can easily lead to virus transmission. According to the estimated time of onset, the rising inflection point is delayed by one incubation period compared with the return peak; if the time of diagnosis is estimated, it will be delayed by another week or so.