Because arched doors have the problem of lucky luck in geomantic omen, that is, family luck will be lower and lower, which is not conducive to the life, work and health of residents.
You can think about it, the archway is the easiest around, where there are the most archways and tombstones! If the entrance or door is arched, it will look like a tombstone, also called a tomb-shaped evil spirit, similar to a yin house, which is very unlucky.
If there is no construction, such a door or porch is not recommended.
If the porch has been made into an arch and cannot be modified, you can settle for the second best. Hanging a gourd on the porch door frame can make up for the only thrill through the function of the gourd, and the gourd is also beneficial to health in home geomantic omen, so it can be solved.