Lin Wu asked, "If water can only enter through the entrance of the parking lot, why do we need to fix the drains in other places?" Lin Meng explained to the dimwit Lin Wu that there are many drains on the square; otherwise, the square would suffer from waterlogging. Even though the square is situated on higher ground, water draining towards any lower part of the city could lead to waterlogging. The flood drainage system of the parking lot serves as a strategic city-level project, not solely for the square.
As a finance student discussing drainage engineering, Lin Wu was somewhat distrustful. However, as the water level deepened and with no other way out, Lin Wu didn't talk nonsense and took the lead. Lin Meng was in the middle, and Xiao Wu trailed behind, putting the manhole cover back in place. The three crawled through the circular pipe.