The industry term "revealing the bottom" refers to unscrupulous store owners using a hairdryer to heat and peel off the seals at the bottom of the packaging boxes for brand-new products meant for sale. They then extract components or even the main unit itself, replacing them with refurbished items or even knockoffs to reap exorbitant profits.
If the method is applied skillfully, ordinary customers cannot spot the flaws at all. They assume the items are unopened and therefore guaranteed to be genuine, remaining completely oblivious to having been ripped off.
Seeing the salesperson agree so readily, Lu Chen decided to preemptively give him a warning. He wanted the salesman to know that he knew the ropes and couldn't be fooled, sparing himself the trouble of further negotiations later on.
Chapter 52