In such an environment, Lady Wu Wang's words indeed provoke contemplation. However, Lady Wu Wang didn't say it to intentionally scare people.
The weight of the coffin, along with the weight of the corpse, plus those wooden poles and carrying poles, is no easy task even for young strong laborers. Once out of the village entrance, after walking a stretch of the road, the coffin bearers were replaced with a new batch. Because of the coffin's weight, everyone had to quicken their steps.
There is a folk saying that the coffin becomes heavier and heavier. This saying is partially borne out of truth. It's not that the coffin's weight truly increases, but it refers to the subjective feeling of those bearing the coffin.
Another part of this has a deep emotional undertone.
The soul in the coffin is attached to the living world, unwilling to enter the underworld.
