This weekend was so ordinary. We spent most of our time taking a rest at home.
>> CORRECT! 
Actually, we were supposed to go to a chrysanthemum festival but we couldn’t go there because we overslept.
>> CORRECT! 
Also, the weather was cloudy so we stayed at home while arranging our dresser.
>> CORRECT! 
My wife bought clothes boxes through a home-shopping so we piled up our clothes neatly.
>> CORRECT! 
*home shopping
In the evening, we went to a big shopping mall near my town.
>> CORRECT! 
We ate Naengmyun for dinner and looked around the stores.
>> CORRECT! 
We also shopped for foods like fruits, juices, nuts, milks and so on.
>> CORRECT! 
Next day, we prepared for our brunch and ate them.
>> CORRECT! 
OR >> The next day, we prepared and ate brunch.
Afterwards, we started cleaning our home.
>> CORRECT! 
Since it was raining and I hurt my back washing hands (?), we just stayed at home for the remaining our holiday.
>> CORRECT! 
*I'm not sure what you mean by "I hurt my back washing hands'.
*rest of the day/weekend
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