If there is no such local custom, you can decide whether to build a chimney according to your own needs and preferences. It should be noted that the construction of chimney needs to consider the problem of ventilation and smoke exhaust to avoid pollution and impact on the surrounding environment.
In short, whether to leave chimneys in rural houses needs to be decided according to local customs and habits, and at the same time, the problem of ventilation and smoke exhaust should be considered to avoid pollution and impact on the surrounding environment.