Master Tian's words went in circles, and in the end, he deliberately added a remark, but Cheng Ye understood the meaning clearly.
Getting in and out of Shelter City is too difficult; one can only struggle within this limited space, with development options painfully narrow.
But this is an unsolvable issue. Once the speed of population movement accelerates, the proportion of infected bodies will also rise, and the current scale of the checkpoint is simply unable to cope.
In the current environment, ninety-nine percent of the shelter cities adopt the same method as Happiness City's Industrial Zone, fully locking down a region's population flow, in order to barely secure some development space.
If entry and exit become frequent, the infection source will naturally be attracted, leading to an outbreak of an infection wave.
As for focusing technological research efforts on screening for infected bodies and unlimited strengthening of checkpoint intensity.
