The operating income of Black Peony Co., Ltd. has been increasing from 2016 to 2018, an increase of 2 billion yuan, but the total operating cost has also increased, from 5.4 billion yuan in 2016 to 5.6 billion yuan in 2017, an increase of 2 100 million yuan, resulting in a reduction in operating profit, total profit, and net profit, and the net profit rate continues to decrease.