The whole mini mall is in your possession, but to get the income you need to build various markets that will entertain people. Start with the cafe and fashion market to attract people that will visit that markets and spend money.
Prepare your mall for the next wave of visitors and build new shops to increase the amount of unique customers. Make people happy and they will spend more money than ever and soon you will become a millionaire. Upgrade your shops so they could have more visitors at the rush hour and that will increase your income. How many days it will take for you to build all shops in the mall?