INTRODUCE

Liu Kai graduated from a vocational school in Shandong province. After graduation, he heard that the development prospects in the south were better at that time, so he came to Shenzhen to seek development opportunities, hoping to make a name for himself in the future.

When he first came to Shenzhen, through a rental platform, he found a one-bedroom, one-living-room elevator apartment in Longhua District with a monthly rent of only 1,200 yuan. Such a price is extremely rare in Shenzhen. When viewing the house, the interior was equally clean and tidy. The household appliances, water pipes, gas stoves and other equipment were all of high quality. So Liu Kai thought he had got a good deal and chose to rent this house.

Just as he had expected, he was very comfortable in this room. Every day after work, he could go home and enjoy his own independent space. At the same time, the light cobdition in this room was also very good. The morning sunlight could also help Liu Kai get rid of his drowsiness. However, all of this was shattered by an electricity bill.

The water and electricity bill of over 700 yuan a month is really beyond Liu Kai's imagination. Before coming here, he had asked his friends who were in Shenzhen about it. The maximum amount of water and electricity that a person could use was just over 100 yuan, but Liu Kai's water and electricity bills were nearly seven times that amount.It turned out that the landlord, in order to save on decoration costs, all the appliances in this house were old-fashioned high-power ones. Compared with the efficient low-power ones, the price of the old-fashioned high-power appliances was about one fifth of that of the low-power ones. The power of the electrical appliances that Liu Kai overlooked when he checked in became his greatest stress. Because of the advance deposit, if he left directly, he wouldn't get a penny of it. So in the following three months, he could only do his best to save electricity, even unplugging the power supply of the refrigerator, just to pay less electricity bills at the end of the month.