Hi Camelia,
You don’t need to do much in the center of the house, just keep it clean and spacious will do.
In feng shui it is very important that there are no bad influences by the external environment. So please check on your external environment for any poison arrow that could trigger the bad sectors of the house.
I feel that your kitchen could be the culprit for this year as it is located in the SE sector of your house. If you use the Flying Star Theory the deadly Star 5 is in the SE sector this year and is an Earth Element Star. With kitchen fire you are actually enhancing the star. This is a deadly star which brings illness, injuries, obstacles and mishaps.
What you can do is if there is drawer below your stove and preferably two drawers will be best. This first drawer below your stove you place all your porcelain or claypot or items make of earth material. It can be your bowl and plate or earth pot. The next drawer below it you place all your metal flying pan or anything makes of metal or steel. In this way you will create an element flow from Fire produce Earth and in return produce Metal. This will help to drain the Star 5. Select a good date to activate it and tomorrow is a good day – time from 1300 to 1500hrs.
If you happen to have an oven below your stove then you can also use the same method but you can take out the items when you need to use the oven. Place it back after using.
Hope this could help you.
Bernard