Recently, I drew a hand-painted wall, which is an end view of the outdoor corridor. It cracked after only a few days of brushing, just like skin cracking.

It is very likely that the bottom is not well done. It's best to shovel off the original bottom of the old house and paint it again.

Explain the cause of the crack to the customer. If it is acceptable, it is unacceptable to continue painting. Let the construction team re-approve the bottom.

Besides, I want to give you a suggestion. At present, most of the masters who approve the wall in the home improvement construction team will relax and relax the flatness as long as they know that the wall is not painted by themselves in the end. Even the primer is brushed casually. You can buy a bucket of water yourself, roll it up and draw it. This fee is included in the quotation.